P: Reduce magnification in Enhance Preview window

[davep60]

Hi,

The new denoise feature in LR 12.3 is great - much better than the old sliders - but...

Does anyone else find the magnification on the preview window too high? The most important thing when assessing what strength of denoise to apply is the impact it's having on image sharpness. And you can't see that properly with the preview at greater than 100%. The only options seem to be the whole image or a section of it at what looks like somewhere between 200 and 300% with no ability to select any magnification anywhere in between. Unless you can and I haven't figured out how. If we can only have one magnification level in the preview window it should be 100%.

[D Fosse]

You're right, and it does seem strange. It's not even a hard ratio, but somewhere around 250%.

What could possibly be the justification for this? And more to the point - how is this resampling actually done?

[GoldingD]

Not at a computer to check, but looking at images in:

https://blog.adobe.com/en/publish/2023/04/18/denoise-demystified

In the preview window, bottom right corner, a minus magnifying glass, what does that do? And does it stick?

[D Fosse]

The magnifying glass just goes to full image. You can see in the first screenshot that it's around 250%. Main image is at 100:

How can I trust 250% zoom?

[TheDigitalDog]

And more to the point - how is this resampling actually done?

Resampling zooming past 1:1? I'm not certain there is any. Zooming out from 1:1 yes but that's not an option. 

As to the minus zoom, it is a "fill screen" so to speak, so one can click on an area to get the actual zoom which yes, is well past 1:1. It's not super discoverable I'll give you that. 

This entire dialog needs a bit of love but for an initial release, it seems fine to get the job done. 

[D Fosse]

But why 250? Why not 200, or even 300?

[TheDigitalDog]

No idea why 250 but I'll ask. 

[TheDigitalDog]

But why 250? Why not 200, or even 300?

Engineering told me that the preview in the Enhance dialog is zoomed in to highlight the difference b/w Enhanced and Not-Enhanced previews. This difference may not be generally seen at 100%; Adobe decided to zoom in on the preview a few years back. The zoom level was set to 250% in Lightroom Classic to show the same focus area in Enhance dialog as other apps ( LrD/ACR ).

They are aware that other zoom ratios are desired, though the best way to get this more attention is to upvote the feature request here. There is, as of now, ONE upvote (mine).

[MH90]

Added my upvote to the OP, it's difficult to tell what's luminance noise or just pixellation at that magnification.

With a bit of maturity, I can see this easily replacing my current workflow of starting with DxO PhotoLab for denoising and lens correction before finishing my edits in LR. Especially once the requirement to make a DNG is no longer necessary as is planned. Definitely looking forward to all these simplifications coming to fruition!

[David297586606iyu]

I can find no mention of the magnification amount Adobe are using in the preview detail panel when using Denoise AI but I do know it is well over 100%. It's more like 250% or 300%! This makes it hard for me to estimate how much to move the percentage slider as I have no interest in removing noise that can only be seen when viewing at this very high magnification. I want to be able to analyse the noise when viewing at 100%. As far as I can make out this is impossible. The zoom symbol on the window goes from fitting the whole image within the constraints of the preview window to 250/300% zoom and nothing in between. This is far from satisfactory for how I (and I would imagine most other people) judge image quality, noise etc. Of course, I can understand if some people feel it is necessary assess noise at higher magnifications than 100% but let's please have the option of the starting point in the detail window being at 100%. This is normal for all other denoising software I have used. As it stands the preview window is pretty much useless to me. 

[TheDigitalDog]

Zoom level was set to 250% in LrC so that it show the same focus area in Enhance dialog as other apps ( LrD/ACR ).

[Ian Lyons]

This has already been raised by others in https://community.adobe.com/t5/lightroom-classic-ideas/p-reduce-magnification-in-enhance-preview-win...

I recommend that you add your upvote to above thread as doing so is the best way of ensuring that Adobe get the message that not all customers agree with their choice for the Enhanced window zoom level.

Note that this thread will likely be merged with above for easier reference and management.

[David297586606iyu]

Thank you for that. I did do a search to see if anybody else was complaining but nothing came up.

Merge my post by all means. I will add my upvote.

David

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