LR4 Previews - Totally Inaccurate!

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  • Updated 7 years ago
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Inaccurate Previews

Editing in Silver Efex Pro2. When the image re-appears back in LR4.2RC, it has lost its contrast in the preview. Opening the image in PS shows that the contrast is still there - but the Preview in LR is just wrong, its flat with no true blacks.

I've only noticed this happening over the last couple of days and had a chat with online tech yesterday. Erased the prefs file, emptied cache etc. no help. He suggested I re-install LR. I cannot see how that will help to be honest. Problem is - if the previews I am seeing are no longer accurate - how on earth can I judge my work? I strongly suspect this is all combined with the other preview issues that LR4 is having. PLEASE FIX THIS soon adobe.
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Paul Tansley

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Posted 7 years ago

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Dorin Nicolaescu-Musteață, Champion

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Can post any screen shots and some step by step instructions to recreate, please?
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Paul Tansley

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Working on Mac OSX10.7.3 - LR4.2RC - latest model 27" iMac 16Gb ram i7 etc.

Steps:
Edit image in - Silver Efex Pro2.
Adjust image - contrast etc.
Save.
Image reappears in the LR browser.
Contrast appears to be soft. Not as black as it was.
Show image in Finder
Open image in PS5.5
compare side by side with preview of image in LR
They are NOT the same. Its subtle, but the LR version is soft. The blacks are not previewing as black as they should be.

Screen shot attached - not my best shot ;) but shows the result. Look at the brush in her hand. In PS its pretty dark. In LR is dark grey.
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Dorin Nicolaescu-Musteață, Champion

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Paul, can you answer two more questions, please:
1. If you view the images at 100% zoom, do you still see the difference?
2. I see you have quite some noise/grain here. If you have a clean low ISO image and don't add any grain in Silver Efex, do you still see the difference at less than 100% (e.g. 1:4) zoom?
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Paul Tansley

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Two screen Shots. One is at normal full size in LR. The other at 100%. Maybe my eyes are just going funny - but I'd swear that the LR version has less depth in the blacks in both versions. I think its more visible at a lower zoom. I'd even hesitate to say that the LR version almost has a sepia tone. Its subtle - very subtle. But for example in the hair - there is a dark line centre of the kids head. That is softer in the 2nd image. At least to my eyes it is.



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Dorin Nicolaescu-Musteață, Champion

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Except for some slight softness and minuscule color shift, that is dues to jpeg compression used for previews in Library module (but not in Develop), I'd consider 100% sample similar for any practical purposes.

As for reduced zoom previews, yes, there's an issue with the way Lightroom displays noisy shadows. They are looking brighter than it should be. You can read more in these threads:

http://feedback.photoshop.com/photosh...

http://forums.adobe.com/message/4322254
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Paul Tansley

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So there is a problem - and others have clearly already seen it and reported it. I can see a colour shift in the 100% views and so can a friend of mine - on a different computer. On the close up image of the kids face - the LR version on the right is definitely slightly sepia - and that's a distraction that simply shouldn't be there in a professional program as good as LR should be.

Knowing that there is a difference in previews in Dev mode and Library mode is all well and good - but there shouldn't be a difference. Things like that should be fixed as a matter of priority at Adobe. I judge my images using my eyes - if they are seeing something that isn't actually true - how on earth can I judge what I'm doing.

Oh well - I've made my point. Nowt more I can do about it. Thank you Dorin for showing me that others are suffering the same problem.
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Dorin Nicolaescu-Musteață, Champion

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Regarding the sephia tone... It might ne the other way around: Lr - neutral and Seilver Efex has a coled toning. Did you apply any toning in Silver Efex?

Which is which in the "child" sample?
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Paul Tansley

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no toning applied in either. PS on left - LR on right. I'd trust PS image to be more colour accurate than the LR one (at least I'd hope its accurate).