Pages: 1 2 [3]   Go Down

Author Topic: Would like to know strong reason to switch to Capture One from Lr/PS  (Read 5721 times)

Bart_van_der_Wolf

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 8912
Re: Would like to know strong reason to switch to Capture One from Lr/PS
« Reply #40 on: October 11, 2018, 01:36:12 pm »

Can you elaborate a bit on what "intelligent Luminosity Masking" would be and do?

Hi Jim,

Luminosity Masking is making selections of regions in the image, based on the scene luminosity. That allows to select e.g. Shadows for an Adjustment layer Mask, based only on Luminosity, not Color. So irrespective of the shadow color, the same selection can be made for different images with the same exposure.

The intelligent part would e.g. allow selecting an adjacent region to those shadows selected earlier, say dark midtones, or everything between shadows and highlights (threshold is user selectable or based on histogram counts), with a smooth transition between such adjacent selections, thus allowing a different adjustment to those regions without affecting the shadows (besides the smooth transition between). Tony Kuyper created such functionality for Photoshop, based on Photoshop actions and scripts (http://goodlight.us/writing/videos/videos-1.html).

Other Smart/intelligent options could be based on different Luminosity clustering strategies, or Color and region clustering strategies (e.g. face recognition).

Combined with the possibility to manually adjust the masks, that would be something.

Cheers,
Bart
Logged
== If you do what you did, you'll get what you got. ==

digitaldog

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 20588
  • Andrew Rodney
    • http://www.digitaldog.net/
Re: Would like to know strong reason to switch to Capture One from Lr/PS
« Reply #41 on: October 11, 2018, 01:40:10 pm »

Hi Jim,

Luminosity Masking is making selections of regions in the image, based on the scene luminosity.
Sorry but I have to ask. How does C1 know/measure scene luminosity?  ;) Luminosity is a measure of the total radiant energy from a body no?
Lightness perhaps?
Logged
http://www.digitaldog.net/
Author "Color Management for Photographers".

Bart_van_der_Wolf

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 8912
Re: Would like to know strong reason to switch to Capture One from Lr/PS
« Reply #42 on: October 11, 2018, 01:55:38 pm »

Sorry but I have to ask. How does C1 know/measure scene luminosity?  ;) Luminosity is a measure of the total radiant energy from a body no?
Lightness perhaps?

Depends on how one incorporates Gamma precompensation.

One could even use Luminance (with or without gamma). Lots of creative possibilities.

Cheers,
Bart
Logged
== If you do what you did, you'll get what you got. ==

digitaldog

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 20588
  • Andrew Rodney
    • http://www.digitaldog.net/
Re: Would like to know strong reason to switch to Capture One from Lr/PS
« Reply #43 on: October 11, 2018, 02:11:01 pm »

Depends on how one incorporates Gamma precompensation.

One could even use Luminance (with or without gamma). Lots of creative possibilities.

Cheers,
Bart
Well perhaps way OT. I don't see how the software knows anything about the total radiant energy from a body. It has nothing to do with what a human perceives but rather describes the total radiant energy, such as watts/second of a source (the surface of a radiating object like a display),  cd/m^2, no?

Logged
http://www.digitaldog.net/
Author "Color Management for Photographers".

Bart_van_der_Wolf

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 8912
Re: Would like to know strong reason to switch to Capture One from Lr/PS
« Reply #44 on: October 11, 2018, 02:42:27 pm »

Well perhaps way OT. I don't see how the software knows anything about the total radiant energy from a body.

Indeed.

https://en.wikipedia.org/wiki/Luminosity_function

Cheers,
Bart
Logged
== If you do what you did, you'll get what you got. ==
Pages: 1 2 [3]   Go Up