LIGHTROOM: Previews in screen resolution as Bridge does it

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  • Updated 5 years ago
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Hi!

Why does Lightroom only provide fixed resolution of their previews?

It would be very helpful, if Lightroom could create preview in screen resolution, as it is configurable in bridge.

Then Lightroom is not forced to recalculate the image to screen resolution, if you're in full mode. And is much faster then it is acutally.

Best Regards
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Michael Decker

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Posted 5 years ago

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John R. Ellis, Champion

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I find that Full Screen Preview can be quite sluggish, even when both Standard-Size and 1:1 Previews have already been built. It's so sluggish that I generally use Loupe instead (with all of its issues).

Perhaps Michael's suggestion would make it much speedier. I used Microsoft's Process Monitor to trace LR's file activity when moving from image to image in Full Screen Preview, and LR is reading about 13.3 MB per image from disk, even though the screen was only 1200 x 800 (2.7 MB). Here's a sample trace:

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John R. Ellis, Champion

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I assume that LR is spending CPU cycles proportional the amount of data read, so that if it is reading 10.3 MB instead of 2.7 MB, it is using 10.3/2.7 = 3.8x the CPU that would be needed if a screen-size preview were pre-computed.