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What does 100% mean in LrC? Does it differ by monitor resolution?

Joined
Feb 11, 2020
Messages
15
Lightroom Version
10.1.1
Operating System
  1. Windows 10
I am having a devil of a time understanding "100%" or 1:1 in LrC terms.

I am trying to understand this because I want to check for focus and I am under the impression that anything greater than 100% or 1:1 is the software adding pixels, so there is little point at looking at magnification greater than that.

Except... it doesn't feel right. I always look at my images at 200-300% to check for focus. If I left it at 100% everything would look in focus.

My monitor is 3840x2160 resolution, but it has a "scale" of 200% and my ORF images say they are are 5240x3912.

In LrC, while in Library, I can select 100% and see an outlined subset of my ORF which I presume is 100% view, but is it really? Doesn't my monitor resolution play into this somehow? Like maybe 1:1 is really "200%" in LrC because of the scaling factor set in my monitor.

Sorry to be a dunce on this, but it isn't clicking with me
jan
 
Joined
Dec 7, 2007
Messages
2,311
Location
Puget Sound
Lightroom Experience
Intermediate
Lightroom Version
Classic
1:1 is literally one pixel of the image represented by one pixel on your monitor. If you want to view the actual raw file, do so in the Develop module where you will be viewing that file. I cannot comment on the impact of scaling of your monitor, but I am suspecting that it is not honored in LR, but this is only a guesstimate on my part.

--Ken
 
Joined
Jul 2, 2015
Messages
10,828
Location
Netherlands
Lightroom Experience
Power User
Lightroom Version
You will never view the actual raw file. You will always view a demosaiced preview. 100% does indeed mean one image pixel is one hardware screen pixel. The scaling setting does not change that.
 
Joined
Feb 11, 2020
Messages
15
You will never view the actual raw file. You will always view a demosaiced preview. 100% does indeed mean one image pixel is one hardware screen pixel. The scaling setting does not change that.
Thank you for a definitive answer, Johan. So that means that if I viewed same photo on a different, lower resolution monitor, 100% in LrC would still be 1:1 pixel to pixel?

jan
 
Joined
Dec 7, 2007
Messages
2,311
Location
Puget Sound
Lightroom Experience
Intermediate
Lightroom Version
Classic
You will never view the actual raw file. You will always view a demosaiced preview. 100% does indeed mean one image pixel is one hardware screen pixel. The scaling setting does not change that.
Correct. I always seem to internalize the demosaicing step.

--Ken
 
Joined
Dec 7, 2007
Messages
2,311
Location
Puget Sound
Lightroom Experience
Intermediate
Lightroom Version
Classic
I am having a devil of a time understanding "100%" or 1:1 in LrC terms.

I am trying to understand this because I want to check for focus and I am under the impression that anything greater than 100% or 1:1 is the software adding pixels, so there is little point at looking at magnification greater than that.

Except... it doesn't feel right. I always look at my images at 200-300% to check for focus. If I left it at 100% everything would look in focus.

My monitor is 3840x2160 resolution, but it has a "scale" of 200% and my ORF images say they are are 5240x3912.

In LrC, while in Library, I can select 100% and see an outlined subset of my ORF which I presume is 100% view, but is it really? Doesn't my monitor resolution play into this somehow? Like maybe 1:1 is really "200%" in LrC because of the scaling factor set in my monitor.

Sorry to be a dunce on this, but it isn't clicking with me
jan
FWIW, you might find this article interesting: diglloyd blog: Too-High Pixel Density on 5K and 8K Displays Impedes Image Assessment .

--Ken
 
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