Lens Correction Tool

Lens Correction / LCC / Generic Lens Profile / Vignetting

Use the Lens Correction Tool Tab to address a number of unwanted issues commonly associated with lens distortion. (Compatible with RAW files only).

Introduction

The Lens Tool Tab has three default tools: Lens Correction, Purple Fringing, and LCC.

The Lens Correction tool includes predefined corrections for many popular lenses from major lens manufacturers. Corrections include distortion, chromatic aberration, sharpness and light falloff.

The Generic or Generic Pincushion Distortion profiles available in the Lens Correction tool address the most detrimental issues related to any simple spherical lens. Complex distortion however, can only be fully corrected with specific preset profiles. Where possible the lens type will be automatically selected in the Profile menu. A selection of the most suitable lens correction profiles can be found under the Recommended Lenses heading or you can manually select a lens correction profile from the available list.

The new Purple Fringing correction tool may be used to remove unsightly fringing that is usually found on very high contrast edges, such as strongly backlit branches of trees and certain specular highlights, particularly those from metallic surfaces.

Create a LCC (Lens Cast Calibration) profile if a specific lens model is not supported in the Lens Correction tool.

The Lens Correction tool includes predefined corrections for many popular lenses from major lens manufacturers

Apply a lens profile

  1. Go to the Lens Tool Tab and select the Lens Correction tool.
  2. Select an image from the browser and choose a specific lens from the Profile drop down menu. (A selection of the most suitable lens correction profiles can be found under the Recommended Lenses heading or select one from the available list).
  3. Once a lens is selected, a check mark will appear in the Chromatic Aberration box and Capture One will automatically apply the chromatic aberration correction based on the lens profile.
  4. If the image still shows some chromatic aberration, click the Analyze (...) button to the right to start Capture One's built-in chromatic aberration analysis and correction algorithms. This will nearly always result in improved correction of chromatic aberration, as it's specific to that image.

 

Next to the Chromatic Aberration check box, select Analyze* for a better correction that is specific to that image.

Apply a generic lens profile

  1. Go to the Lens Tool Tab and select the Lens Correction tool. 
  2. Select an image from the browser and choose a generic lens option from the Profile drop down menu.  (All sliders in the tool are reset; there are no default settings for a generic lens).
  3. Check mark the option boxes and adjust the Sliders to the desired settings. (As there's no profile available, selecting the Chromatic Aberration box starts Capture One’s built-in chromatic aberration analysis and correction feature).
  4. Click on the Analyze (…) button to restart the process, if necessary.

Apply a generic lens profile

Batch Chromatic Aberration Correction*

Capture One Pro 8 has a new Chromatic Aberration Batch Correction capability, which is a valuable time saver in a user’s workflow. It works regardless of the Profile setting.

  1. Go to the Lens Tool Tab and select the Lens Correction tool.
  2. Select multiple images from the browser.
  3. Press the Analyze (…) button to start the correction process (this will override chromatic aberration correction if a lens profile is detected).

Batch Chromatic Aberration Corection

Lens correction: Movement Pro

  1. If you are using a lens or camera system that can have movements applied, go to the Movement tab in the Lens Correction tool.
  2. If the Focal Length and Aperture can be detected, the values will automatically be shown in the corresponding fields. Otherwise manually enter the information.
  3. Enter the shift data for the x and y axis. Changing the shift parameters will have a positive benefit on the distortion and light falloff corrections in particular.

Enter the shift data for the x and y axis

Purple Fringing

Capture One Pro 8 features a redesigned tool to remove purple fringing. It includes a familiar slider allowing control over the intensity, as well as the typical options to save the resulting setting to the adjustments clipboard and as a preset. Both allow the setting to be applied to multiple images. Although the Purple Fringing tool is offered as a standalone control for global corrections, purple fringing removal can also be applied as a local adjustments layer. As a result, the new Purple Fringing tool can be found under both the Lens Tool Tab as well as the Local Adjustments Tab.

To remove unsightly purple fringing

  1. Go the Lens Tool Tab, and select the Purple Fringing tool.
  2. Zoom to at least 100% in an area displaying a fringe with a purple hue along a high contrast edge. The inclusion of complementary cyan, magenta or yellow-green fringes usually indicates chromatic aberration.
  3. To reduce the intensity of the purple fringing, drag the slider to the right. If the fringing is severe it may not be possible to remove it entirely.
  4. The setting can be copied and applied to other image files as a Style or Preset, if required.

Capture One Pro 8 features a redesigned tool to remove purple fringing

LCC test shot Pro

Create a LCC (Lens Cast Calibration) profile if a specific lens model is not supported in the Lens Correction tool.

Either photograph a LCC (Lens Cast Calibration plate) to create a test shot for an up-to-date LCC profile of a particular lens. To get an exact profile and optimal correction, the LCC test shot should be created with the same lens and shutter setting as the intended corrected images. Tilt and Shift adjustments on a camera must also match for best results.

Alternatively, use a similar LCC test shot if you keep a library of previously captured LCC images. (Phase One does not recommend selecting the Dust Removal check box with this generic approach to lens correction).

Create a LCC (Lens Cast Calibration) profile if a specific lens model is not supported in the Lens Correction tool

Create and apply a LCC profile Pro

  1. Import and select the LCC image from the browser. (I.e. the image captured with the white Lens Cast Calibration plate).
  2. Go to the Lens Tool Tab. Select the Lens Correction tool and  press the Create LCC button.
  3. Check mark the Wide Angle Lens with Movements box if you are using a technical camera with a lens wide angle lens and some degree of movement.
  4. Check the Include Dust Removal Information to create a map to automatically remove dust. Selecting this option will increase processing time. It also results in larger file sizes than profiles without dust removal data. Only select this option if essential.
  5. Press Create.
  6. Capture One will now analyze the image and create the LCC profile. (When completed, the check box Color Cast is selected. The color differences across the image should now be even).
  7. The thumbnail will be labeled with LCC to help you keep track of your captures.
  8. To Apply the LCC to one or more images (that were captured with the same camera) simply select them both in the
    thumbnail browser, right click, and choose Apply LCC.

Tip: Right click on a thumbnail in the browser and select Create LCC...

LCC option

Save a LCC as preset Pro

  1. Click on the Manage Preset icon at the top of the LCC tool.
  2. Select Save User Preset... from the drop down menu.
  3. A dialog box will open. Name and save the Preset.

Save a LCC as preset

Import LCCs Pro

A LCC library from Capture One 6 can be imported and converted into presets in version 8.

  1. Go to the Lens Tool Tab and open the LCC tool.
  2. Click on the action menu icon and select Import LCC library from Capture One 6.
  3. A dialog box will appear. Press OK.

A LCC library from Capture One 6 can be imported and converted into presets

LCC options Pro

  1. Go to the Lens Tool Tab and open the LCC tool.
  2. Click on the action menu icon and select Apply LCC Options...
  3. Check mark the Uniform Light option box and adjust the slider as desired.
  4. Press OK. Now when you apply the LCC, this new Uniform Light setting will override the existing setting.

Create and apply a LCC profile

Learn more

Workflow Tips:

  • Apply LCCs in bulk by selecting a batch of images that include LCCs. You can also analyze your LCCs in bulk.
  • If you have multiple LCCs, Capture One detects whether an LCC should be applied to images following the LCC or before it.
  • If you are a photographer who creates an LCC for every frame, you no longer need to add an LCC to your library before applying it.

Light falloff

Light falloff arises because an image is exposed more at the center of the frame than at the corners. The distance from the lens to the backplane is longer at the edges than it is at the center and, therefore, less light can get through the lens at oblique angles. This effect is most common with wide-angle lenses that are used with a wide-open aperture. If you have a profile for your lens, set the amount to 100% to get a completely flat and even looking image. Otherwise, use a generic profile and manually set the desired amount with care.

If you have a profile for your lens, set the amount to 100% to get a completely flat and even looking image. Otherwise, use a generic profile and manually set the desired amount with care

Chromatic aberration and purple fringing

Chromatic Aberration (CA) occurs because light of different wavelengths takes different paths through the lens that may not be in focus on the backplane. As most light is a mix of several wavelengths, the lens will focus the colors differently and create color fringes on edges of high contrast areas.

Since CA results from colors that have shifted, a white or light color on a dark background will have colors on either side. The most common manifestations of the error are seen as red/cyan and blue/yellow but others are possible. One of the more unsightly is green/purple but this should not be confused with Purple Fringing.

Brass, chrome and other metallic products often give rise to extreme contrast that can generate Purple Fringing. Purple Fringing (PF) is, like Chromatic Aberration, an artifact that occurs because a lens interacts differently with light of varying wavelengths. Unlike Chromatic Aberration, Purple Fringing will not usually show fringes of different colors. PF is mostly visible on the edges of very high contrast image areas, such as metallic products or branches on a tree against a bright sky.

Purple Fringing is often seen on images that also show Chromatic Aberration. Wide-angle lenses are more likely to show this artifact.

Chromatic Aberration (CA) occurs because light of different wavelengths takes different paths through the lens that may not be in focus on the backplane

Sharpness falloff used for soft corners

Soft corners can occur for many reasons and commonly transpire when a wide-angle lens is used. Soft corners are often seen as a desired retro-focus effect. However, Capture One can help correct this effect if it is unwanted with the Sharpness Falloff tool. Set your lens profile to 100% to fully correct this issue (if you have one). Otherwise, experiment to get an appropriate setting.

Sharpness falloff used for soft corners