Experiment Acquisition

Basic image acquisition

Having NIS-Elements installed and all hardware accessories set up within the Devices > Device Manager window, you can start capturing images. Let's begin with the simplest case.

  1. Turn the connected camera and other devices ON and start NIS-Elements.

  2. Select a suitable hardware configuration on startup.

  3. Make sure the Compact tab is selected with the Acquisition panel displayed on the right.

  4. Select a lightpath which includes a camera (1).

  5. Display the camera image by the Live tool (2).

  6. Adjust Exposure on the camera pad to get a nice image of the scene.

  7. Focus on the scene by the Auto Focus tool (3).

  8. Capture the image by the Capture tool (4).

  9. A new image is opened automatically and named โ€œCaptured ...โ€.

Lightpath tool bar

Buttons for switching between lightpaths available for the current hardware configuration are displayed below the tool bar of the Acquisition panel. An icon is displayed on each button to indicate the type of lightpath:

Brightfield

Bright-field microscopy acquisition.

Transmitted

Transmitted light microscopy acquisition.

, DIA, EPI

General acquisition based on optical configurations. Different optical configurations can be created within such a lightpath.

See Image acquisition via optical configurations.

Fluorescence

Multichannel acquisition based on โ€œexperiment settingsโ€. With this concept, the user specifies a set of fluorescence dyes to be used within an experiment. The program calculates the hardware settings automatically.

See Multi-channel image acquisition via experiment settings.

, DIA, EPI

General observation lightpath. Different optical configurations can be created within such a lightpath.

Lightpath

Click this button to open the Lightpath Scheme panel which visualizes the current lightpath and may indicate possible errors in the setup.

Selecting visible buttons

In case there are some lightpaths you will not use, you can hide them from the tool bar. Click Configure... or using the RMB anywhere in the tool bar and select Select Visible Buttons to open the User Visible Buttons window.

  1. (De)select any lightpaths you do not want to display. The ones with the tick icon will be displayed in the tool bar.

  2. Optionally change the icon color (color or monochromatic icons).

  3. If you are a user with the privilege Modify devices and light paths, you can even hide some light paths entirely. To do this, use the Configure button in the same dialog window to open the Button Order and Visibility System Defaults window.

    Drag the buttons to the bottom area to hide them to the users. Change the order of the available buttons by moving the buttons in the Available to Users area. Quick single-click button setups are available in the Quick Setup section in the top of the window. Rename the button in the context menu over the button.

  4. Click Close to confirm the selection.

Image acquisition via optical configurations

Select a lightpath button with the icon . A tool bar with optical configurations appears below the lightpath buttons. The usage of optical configurations (OCs) within the Acquisition panel is the same as in the previous versions of the software where optical configurations were global. The difference is that only OCs created within the currently selected lightpath are displayed here and in the main tool bar of NIS-Elements. Other optical configurations are available only after switching the lightpath.

Note

To change the described default behavior, click RMB in the OC tool bar and select Show OCs from all Lightpaths. Moreover, particular OCs can be hidden from the tool bar by the Select Visible Configurations command from the same context menu.

Add

Click this button to call the Calibration > New Optical Configuration command.

Multi-channel image acquisition via experiment settings

Select the Fluorescence lightpath to display the Experiment panel. Here you can define different presets for multi-channel acquisition.

Let's suppose you are creating a simple experiment consisting of channels DAPI, FITC, TRITC.

  1. Select a lightpath

    Make sure the Fluorescence light path is selected in the Acquisition panel.

  2. Add a new experiment preset

    Click on the Add button in the Experiment panel.

  3. Specify channels

    Type โ€œDAPIโ€ in the first search field, select the actual dye you will be using and confirm it by Enter. Another search field appears. Add the FITC and TRITC dyes as well. Optionally, select the Use Brightfield Channel box to capture the brightfield channel too.

  4. Confirm the experiment settings

    Click Finish to close the window. The newly created experiment will be activated and a button for each channel will appear below the selection box.

    Singe Channels and All Channels options are present by default.

    • All Channels - automatically calculates the possible dyes for acquisition based on the experiment excitation wavelength and filter settings. All channels are acquired during the capture.

    • Single Channels - all possible dyes are calculated, however just the single (selected) channel is acquired during the capture.

  5. Adjust light power and exposure for each channel

    Below the Experiment panel, the experiment pad (Experiment pad) appears instead of the usual camera pad. It consists of a simple control panel for each channel where illumination power and exposure time can be adjusted. Only one channel can be active at a time.

    You can:

    1. Run the live image by the Live tool.

    2. Activate the split view by the Split Components tool in the image tool bar.

    3. Switch between the channels within the experiment pad and adjust the exposure and illumination power so that the live image is as you need. If you need to make any changes in the preset, use the Exp. Settings button, to edit it. See Adjusting and managing experiments.

    4. Use the Capture tool to capture a single multi-channel image.

Experiment pad

The Experiment pad is different for different microscopes. For Nikon Ji, it looks as follows:

See Microscopes.

Camera Exposure slider

The first slider sets the exposure of the connected camera. Move the slider or enter a specific value into the edit box.

Illumination Power slider

The second slider sets the illumination power of the connected illumination device. resets the illumination power value to default.

Apply Opened Aperture Brightfield Service Settings , Apply Closed Aperture Brightfield Service Settings

Preset values of exposure, light power and condenser selection can be defined for each objective in the Devices > Service Settings window. This button applies the preset of the current objective. If the experiment settings are different than the service settings, an exclamation mark is shown on the experiment button.

Note

The Show Closed Aperture button for 4x objective on ACQ pad option must be selected in the Devices > Service Settings window to display the latter button.

Camera ROI

The system offers the users three pre-defined ROIs and a custom one. All of the ROIs are available only if they are different from each other.

Optimal, Large

These two ROIs are set (Define) in the Devices > Service Settings (Camera > FOV).

Full Sensor

ROI set to the size of the full sensor.

Custom

Defines the ROI size (Define ROI...), specifies which buttons are shown on the pad (ROI Buttons), changes the custom ROI size and saves (Save ROI...) or loads saved ROIs (Load ROI...).

Adjusting and managing experiments

The experiment is characterized solely by dyes, and the system automatically identifies the appropriate light path configuration for each dye. The light path settings can be adjusted manually by opening the Edit window:

Here you can change the color of a channel, rename it, delete it (x), change its excitation wavelength (when switched to Expert Mode), change the Z offset, or add a Brightfield channel (Add Brightfield).

The Single Channels experiment is created to efficiently examine an unknown sample by enabling the selection of any light source wavelength and viewing the results in a live window with a single channel. While the setup is similar to the corresponding channel in the "All Channels" experiment, operating it is simpler due to having a LUTs graph and a single channel tab in the live window. Checking the Single channels option means that even in a multi-channel experiment, only one channel is captured at a time. When you create a new setup (in the Device Manager) for the first time and have already created a reasonable All Channels experiment, the system automatically generates a corresponding Single Channels experiment.

The behavior of the โ€œSingle Channelsโ€ experiment mirrors that of turning off all channels except the current one in the โ€œAll Channelsโ€ experiment, which can be done through the context menu over the channel buttons. To disable a channel use the RMB over the channel button and select Off. If you check the option Channel Selection via Left Mouse Button (found in the General tab of the Configure dialog), a simple LMB can be used to turn the channels on and off.

The Acquisition option on the right means that for a given experiment (given dye) a number of possible configurations (each one shown as a square) have been found and can be used for acquisition. Move between the configurations using the arrows.

The spectrum preview below shows the software pass for the channel selected in the drop-down menu. Excitation curve can be shown in the preview by checking Show excitation curve. Once you are done with the adjustments, click Save to confirm the settings.

The experiments can be managed through Exp. Settings:

Here you can check all the channel information for each channel selected in the first drop-down menu. More channels can be added using Add (see Multi-channel image acquisition via experiment settings). By clicking Edit, you are redirected to the editing window described above.

Parfocality correction

Parfocality ensures seamless transitions between microscope objectives with minimal or no refocusing, allowing for consistent focus adjustments during magnification changes. Experiment parfocality can be set in three different ways:

  • Automatically - using the context menu command over the image area (Experiment Parfocality Correction > Find Automatically).

  • Manually - by setting the Z Offset values in the Edit window.

  • For experiments excluding brightfield - using the context menu command over the image area (Experiment Parfocality Correction > Save Channel Parfocality Offsets).

Sample navigation

Sample navigation is integrated into the Compact layout to control mainly the Ji and Ti2 microscope systems. Relying on the geometry of the known Ji/Ti2 microscope holders, this improves the identification of sample location, with added functionality for automatically scanning of slides, wellplates, and dishes. The pad can be undocked (opened as a separate window) using the button.

Sample navigation is also integrated into JOBs as tasks used for defining labels, dosing, and well selection:

Note

To use the Sample Navigation panel with the Nikon Ti2 microscope, Z focus has to be calibrated first (see Service settings ).

Note

Features vary among different software packages and used hardware.

Please refer to Feature dependency on hardware and packages for a detailed comparison of the available functions for each software package and hardware combination.

Stage

Full

Shows the full sample holder overview.

Area

Displays the preview of the scanned area of interest (typically a slide or a coverslip area usable for imaging). To edit the AOI, select the Full mode and click on the AOI edge. Confirm the AOI by RMB.

Both the Full and the Area areas can be scanned separately, typically the Full area is scanned just once and the Area area is scanned multiple times (per each sample).

Preview

Scans the Full/Area sample preview based on the selection made in the Preview using drop-down menu.

The capture depends on the selected holder and uses the bright field settings set in the Service Settings window ( Devices > Service Settings ).

Region

This tool is used to draw one or more regions in the preview area which are then scanned using the Large Image button. Description of the specific tools can be found here: Drawing tools. If no region is defined, it is possible to scan just the Area. The newly improved Focus Surface generator is integrated into the built-in job used for the scanning.

Large Image

Scans a large image over the drawn region(s).

Scanning # ROI(s) - shows the number of ROIs to be scanned.

Built-in Job scans the large image using the built-in method whereas Custom Job enables the user to scan the large image using the selected custom JOB.

See JOBS and HCA.

Generate Focus Surface finds the optimal focus surface and performs the large image scan on this surface whereas Current Z-Level scans the large image on the current Z position.

Create Large Image stitches the large image together creating one large image file, whereas Store Single Images does not stitch together, instead a multi-point file is created.

Preview using

Specifies the settings for the Preview scan.

Current settings perform the scan with the current light path and experiment settings, Optical Configuration scans using the selected optical configuration (click Select optical configuration... to select it) and Service Settings scans a bright field image based on the parameters set in Service Settings (Service settings ).

Z Position

This selection further specifies the Z position used for the Preview scan.

Choose Sample Swap (sample swap position defined during the Z calibration) or Current (current Z position).

Show FOV

Shows/hides the camera field of view in the preview area.

Show Area

Shows/hides the area of interest (e.g. a coverslip) in the preview area.

Select Holder

Option to choose the relevant holder from the database.

The holders on the Ji system are calibrated via the Ji Tools utility, while the calibration of the holders on the Ti2 system is done through the Service Settings (Service settings ) dialog in NIS-Elements. The Z coordinates used in automatic functions (Detection, Scanning, etc.) for the selected holder are saved in the Service Settings (Service settings ).

Context menu over the Preview (similar for all sample holders)

Scan Preview in Area

Starts scanning the area of interest (white rectangle).

Scan Large Image in Area

Starts scanning the large image.

Auto LUTs settings

Opens the Auto Scale Settings window where the Low and High fields determine how many of all pixels of the picture are left outside the LUTs sliders when Auto LUTs is applied (0-10%). See also Auto Scale Settings.

Open as Document

(requires: Local Option)

Opens the scanned overview or ROI as a new image document.

Clear All

(requires: Local Option)

Clears the acquired preview and any present regions.

Context menu over a Region

Scan Large Image in ROI

Starts scanning the large image inside the selected ROI(s).

Rename ROI, Select ROI, Delete ROI

Renames/selects/deletes the ROI.

Select all ROIs, Deselect all ROIs, Delete all ROIs

Selects/deselects/deletes all ROIs at once.

Scan Preview in Area

Starts scanning the area of interest (white rectangle).

Scan Large Image in Area

Starts scanning the large image.

Auto LUTs settings

Opens the Auto Scale Settings window where the Low and High fields determine how many of all pixels of the picture are left outside the LUTs sliders when Auto LUTs is applied (0-10%). See also Auto Scale Settings.

Open as Document

(requires: Local Option)

Opens the scanned overview or ROI as a new image document.

Z Navigation

The vertical column represents the entire Z dimension, with the yellow horizontal line representing the current position, the blue line indicating the Focus position, and the green line denoting the swap position. Place your mouse cursor over the vertical column, then scroll the mouse wheel to adjust the current (yellow) position or double-click a position to move to it.

Set

Sets the current Z position as the โ€œFocusโ€ position. A tool tip over the button shows its Z value.

Zoom in/out

(requires: Local Option)

Zoom in or out in the Z navigation preview.

Reset

This button appears only when working with slide samples and resets the focus value to default.

Focus

Moves the Z stage to the predefined focus position. A tool tip over the button shows its Z value.

PFS

(requires: Local Option)

Turns the perfect focus system (PFS) on and applies the current PFS offset.

Swap

Moves the stage to the swap position - a safe position for changing the samples. A tool tip over the button shows its Z value. This value is calculated automatically during the holder calibration and cannot be changed.

Feature dependency on hardware and packages

There are various combinations of hardware, microscopes, and NIS-Elements packages activating some Sample Navigation features. The following table outlines the different options. Each option is closely described below the table.

Table 4. 

HardwareAr package + 6D module + JOBs moduleAr packageBr packageD package
Ji/Ti2 microscope, Mono camera supporting fast scanOption 1Option 2Option 2Option 5
Ji/Ti2 microscope, RGB camera supporting fast scanOption 3Option 5Option 5Option 5
Ji/Ti2 microscope, Mono/RGB camera not supporting fast scanOption 4Option 6Option 6Option 6
Ni-E/other microscope + MZH+Aux, Mono/RGB camera supporting fast scanOption 3Option 5Option 5Option 5
Ni-E/other microscope + MZH+Aux, Mono/RGB camera not supporting fast scanOption 4Option 6Option 6Option 6
Ni-E/other microscope, Mono/RGB cameraOption 4Option 6Option 6Option 6

See Cameras supported for continuous movement.

Important

  1. Service Settings dialog is available only:

  2. Fast scanning is supported:

  3. Using the Custom job is available only for license containing Ar + 6D + JOBs.

List of Options:

Option 1 - fast scan, full settings, built-in or custom job

Scanning is performed by the continuous movement (fast). โ€œLarge Imageโ€ can be scanned by a custom or a built-in job (scanning routine).

Available features for option1 :

Scan Large Image window
  • Built-in Job

  • Custom Job

  • Generate Focus Surface

  • Current Z-Level

  • Create Large Image

  • Store Single Images

Scan using ( Full mode)
  • Current Settings

  • Optical Configuration

  • Service Settings

Z Position ( Full mode)
  • Sample swap

  • Current Z

Scan using ( Area mode)
  • Current Settings

  • Optical Configuration

  • Service Settings

Option 2 - fast scan, full settings, built-in job only

Scanning is performed by the continuous movement (fast). โ€œLarge Imageโ€ can be scanned by the built-in job (scanning routine) only.

Available features for option 2:

Scan Large Image window
  • Generate Focus Surface

  • Current Z-Level

  • Create Large Image

  • Store Single Images

Scan using ( Full mode)
  • Current Settings

  • Optical Configuration

  • Service Settings

Z Position ( Full mode)
  • Sample swap

  • Current Z

Scan using ( Area mode)
  • Current Settings

  • Optical Configuration

  • Service Settings

Option 3 - fast scan, current settings only, built-in or custom job

Scanning is performed by the continuous movement (fast). โ€œLarge Imageโ€ can be scanned by custom or build-in job (scanning routine). Service settings are not available for this configuration.

Available features for option 3:

Scan Large Image window
  • Built-in Job

  • Custom Job

  • Generate Focus Surface

  • Current Z-Level

  • Create Large Image

  • Store Single Images

Scan using ( Full mode)
  • Current Settings

  • Optical Configuration

Z Position ( Full mode)
  • Sample swap

  • Current Z

Scan using ( Area mode)
  • Current Settings

  • Optical Configuration

Option 4 - step-by-step scan, current settings only, build-in or custom job

Scanning is performed by the step-by-step movement (slower). โ€œLarge Imageโ€ can be scanned by the custom or built-in job (scanning routine). Service settings are not available for this configuration.

Available features for option 4:

Scan Large Image window
  • Built-in Job

  • Custom Job

  • Generate Focus Surface

  • Current Z-Level

  • Create Large Image

  • Store Single Images

Scan using ( Full mode)
  • Current Settings

  • Optical Configuration

Z Position ( Full mode)
  • Current Z

Scan using ( Area mode)
  • Current Settings

  • Optical Configuration

Option 5 - fast scan, current settings only, build-in job only

Scanning is performed by the continuous movement (fast). โ€œLarge Imageโ€ can be scanned by the built-in job (scanning routine) only. Service settings are not available for this configuration.

Available features for option 5:

Scan Large Image window
  • Generate Focus Surface

  • Current Z-Level

  • Create Large Image

  • Store Single Images

Scan using ( Full mode)
  • Current Settings

  • Optical Configuration

Z Position ( Full mode)
  • Current Z

Scan using ( Area mode)
  • Current Settings

  • Optical Configuration

Option 6 - step-by-step scan, current settings only, build-in job only

Scanning is performed by the step-by-step movement (slower). โ€œLarge Imageโ€ can be scanned by the built-in job (scanning routine) only. Service settings are not available for this configuration.

Available features for option 6:

Scan Large Image window
  • Generate Focus Surface

  • Current Z-Level

  • Create Large Image

  • Store Single Images

Scan using ( Full mode)
  • Current Settings

  • Optical Configuration

Z Position ( Full mode)
  • Current Z

Scan using ( Area mode)
  • Current Settings

  • Optical Configuration

Well Plate

Accessibility of the some function depends on the automatic scanning settings (Overview and Plate scanning in Sample Navigation) made in the Service settings window.

Detect

Automatically detects the well plate geometry using AI (artificial intelligence).

Overview

Scans the overview of all wells with the bright field settings set in the Service settings window. Image of the well center is displayed in the preview for each well.

Scan

Captures high-resolution images of those wells selected via the Select Wells tool. Once clicked, a form appears where you should select acquisition options. Options available for the current configuration selected in the Acquisition panel are available.

Built-in Job

Plate ID

Enter a unique ID of the well plate to be scanned.

Scan Area

Select the size of the large image (MxM tiles) to be scanned in the center of each well.

Auto Focus

Select the method used for focusing.

Custom Job

Job

Select a job from the database used for the scanning and click Scan.

Label Wells

Opens the Labeling and Dosing window.

Labeling and Dosing (data used for analysis)

  1. Click in the Compound area to define a compound - name it and hit Enter.

    Note

    Negative and Positive Control labels are already defined.

  2. Optionally create a compound group by clicking in the Group area. Name the group and hit Enter. All the defined compounds are added to the group.

  3. Set the compound units in the Units drop-down menu.

  4. Select a group of wells in the well plate preview and click on a label. Repeat this for all defined labels.

  5. Fill in the concentration in each labeled well. Values can be entered manually, copied from other wells or well series or filled by expanding the yellow selection.

  6. Confirm the Labeling and Dosing by clicking OK.

    Note

    To save the label/dosing definition into the database, click in the top right corner and use the saving manager.

Custom Labels (not used for analysis)

  1. Click on the icon to define a new custom label - name it and hit Enter.

  2. Change its color by clicking on the color rectangle.

  3. Select a label so that it is highlighted by a yellow rectangle.

  4. Click or click and drag in the well plate preview to mark the wells with the selected label. Click on the labeled well again to remove the label.

    Tip

    While holding down Ctrl you click and drag in the preview to remove the labels.

  5. Click OK to confirm the labeling.

Select Wells

Opens the Acquisition Selection window where you can select wells for acquisition. Hold Shift to add the clicked wells to the selection. Hold Ctrl to remove the clicked wells from the selection.

Displays the summary labeling and selection information.

Scheme

Displays a well plate scheme.

Images

Displays captured images as the wells.

Overlay

Displays the labeling, dosing and well selection layers over the preview image.

Move to Exact Position

Moves the stage to the exact position clicked in the preview area.

Select Holder

Option to choose the relevant holder from the database.

Document

This tab supports navigating in the ND2 documents having well plate metadata created in the Smart Experiment application.

Displays the summary labeling and selection information.

Scheme

Displays a well plate scheme.

Images

Displays captured images as the wells.

Overlay

Displays the images together with defined labels and selection.

Service settings

The Devices > Service Settings window allows adjustments to the microscope and camera settings which are applied to the well plate overview scanning. Settings adjusted here also influence the acquisition controls in the Acquisition panel.

Well plate overview scanning is used by the Smart Experiment module and by the View > Acquisition Controls > Sample Navigation panel.

Note

The functionality is available only with certain microscopes and cameras connected.

See Fast Acquisition Using Continuous Movement.

Depending on the microscope model, some of the options could not be available.

Overview and Plate scanning in Sample Navigation (Nikon Ti2)

How to setup Ti2

Opens the GITHUB DOCUMENT describing how to set up the Nikon Ti2 microscope with software applications utilizing well plates, such as cell detection Ai tools, sample navigation, and custom jobs.

Overview and Plate scanning in Sample Navigation

Sets the limits to the user controlling the Sample navigation panel.

Full

All functions of the panel are available.

Preview/Overview Objective + Z-Reference

Limits the control to a basic overview and Overview or ROI scanning and re-scanning. Z-Reference Only

Z-Reference Only

Leaves the user with just a simple stage observation and possibility to change the sample holder.

Use this camera for overview scanning and assays

Select a camera used for scanning the overview in the Sample Navigation and Assay.

Test Connection

Click this button(s) to test the triggering cable connection(s).

Camera

Specifies the scanning settings for the particular camera.

Note

Exposure time for the 4x objective and the Closed Aperture exceeding 800 ยตs may result in blurred images in the well plate overview.

It may also cause some functions, such as the NIS.ai > Preprocessing > Cells Presence.ai GA3 node, to not work properly.

Acquisition

You can set the exposure time, light power, and select a condenser or aperture individually for each objective of the current nosepiece configuration. Switch the tabs with the objective names to move between the objective settings.

The Edit button activates the edit mode, allowing the user to save the complete camera settings in the same manner as they are stored in Optical Configurations. When the edit mode is enabled, two additional buttons become available:

Values to Config.

Loads the current brightfield acquisition settings from the system to the configuration window.

Values to System

Sets the brightfield acquisition settings defined in the configuration window to the system.

Shortcut buttons for applying the opened and closed aperture values ( ) are available in the Experiment pad for brightfield experiments.

Brightfield settings are also used in JOBs.

Brightfield Lightpath

Select the filter changer positions to be used in the experiment.

Startup Fluorescence

Camera exposure and light power values used for the start of the AutoSignal.ai algorithm.

FOV

These ROIs are integrated into the Experiment pad. Both ROIs can be adjusted here using Define.

Optimal

Size of this FOV (camera ROI) is calculated automatically for each hardware configuration to prevent shading on image borders. When turned on in the camera pad, it is placed in the center by default. Here you can shift it by defining the offset.

Large

A user-adjustable FOV (camera ROI) which is used with the continuous scanning procedure (e.g. well plate overiew).

Microscope Limits (Nikon Ji)

Objective

Sets the Z positions offsets between the current objectives.

Stage Z navigation

Specifies the sample holder ( Select Holder) and can be used to adjust the focusing position for the Sample navigation. The Z Scheme explains the focus position.

XYZ SW Limits

A drawing of the currently selected sample holder containing its dimensions and movement limits set within the software is shown in this section. Z imaging limit can be set in the middle edit box for each objective (switch the tabs to move between the objectives). Side view of the imaging area is depicted in the bottom.

Microscope Limits (Nikon Ti2)

Objective

Sets the Z positions offsets between the current objectives.

Stage Z navigation

Calibrates the Ti2 Z drive so that it can be used in the Sample navigation.

  1. If the system is not calibrated yet, click Calibrate Z....

  2. Select a slide holder for calibration and click Next.

    Even if you plan to use a well plate, the proper Z calibration needs to be done on a slide.

  3. Run Live and focus on the slide sample either manually or using the Auto Focus. The Z Scheme explains the focus position.

  4. Once in focus, click Finish.

You can repeat the calibration by clicking Recalibrate Z... or adjust the Focus Position in the edit box. The button sets the value back to default.

Global Limit

Sets the global top limit position for the 4x objective.

Assay Objectives

Assay Objectives, Objective for scanning overview

Assays of the Smart Experiment module expect certain objective magnifications for certain tasks.

Here you shall assign actual objective models to be used with the assays.

Well to Well Focus Range

(Nikon Ji)

The focus range used after moving to an adjacent well. It should be calculated as:

R = 2 * imax + 100
iwmax

Maximum possible difference between well plate bottoms of adjacent wells caused by inaccuracies in the manufacturing process.

100

An extension of the range which ensures the auto focus would work even if iw = iwmax.

Distance Offset from the Focal Plane to Analysis Plane for BF

The distance to be moved after automatic focusing to see the specimen. This value is set for each objective in the nosepiece.

Parfocality Limits between Channels

Specifies the maximum allowed difference of focus when switching between different channels within one experiment.