1:1 Loupe on secondary display does not show full resolution

[tobias2.4]

Hi all,

I've started to use a second monitor with LR 2.4 on Windows Vista yesterday and found that the 1:1 Loupe view on the secondary display does not seem to show full resolution. Even with 2:1 or higher magnification the secondary display seems to be based on lower resolution data with some detail lost.
The two monitors that I use are of different type, one widescreen and one 4:3, and run different native resolutions.

I'd appreciate your advice!

Regards, Tobias

 

[Victoria Bampton]

Hi Tobias, welcome to the forum!

Question then - when you look at the file in Develop module, does it give you a message saying the the file is offline or missing?

 

[tobias2.4]

Thanks for the quick welcome, Victoria!

No, it behaves as always when it calculates a 1:1 view - for a few seconds there is a coarser preview with a "Calculating ..." message and then the final image is shown. Only that it lacks detail - as if compressed or object to too much noise filtering. I should add some screen shots tonight to show the effect. Without comparison to the primary display it would be hard to notice.

 

[Brad Snyder]

Tobias, welcome, Screenshots would definitely help. I'm not sure I understand; at zooms higher (closer) than 1:1, there will definitely be coarseness and pixelation, because there aren't any more pixels to show, each image pixel is squared into ?x? screen pixels. Could that be what you're seeing, or is something else definitely occuring, even at the 1:1 size?

 

[Mark Sirota]

Could it be that your second display is not set to its native resolution?

 

[tobias2.4]

Hmmm, fortunately I was not able to reproduce the problem last night. :-[

Maybe restarting Windows did the trick and LR caught on to the resolution of the new monitor. Also, someone in another forum mentioned such behaviour with LR, when it is run as a window instead of full-screen. Anyhow, I do not experience the problem anymore.

Thanks all!

PS: Brad, it was definitely also visible in the 1:1 view and not just the obvious pixelation of higher magnifications. The values of the pixels were changed, as in noise removal or with compression artefacts.

PS: Mark, I had the maximal native resolution on both screens, but it could have been the first time that the new monitor was connected. That's why a system restart might have fixed it (?)

 

[Victoria Bampton]

We love problems that spontaneously fix themselves. Restarting fixes a multitude of weirdness.

 

[sjgibbon]

Hi, I'm new to the forum and experiencing this problem. The thread has not been active for some time but there is no indication of a resolution.

I have been a LR user since the beginning on PC then Mac. I just recently moved to a Mac Pro and started using 2 monitors. After viewing a seemingly random number of images the 1:1 loupe view on the secondary monitor becomes slightly pixelated, like a bad scaling artifact. Depending on the image it can be quite subtle, I've flagged images for deletion when quickly reviewing a shoot before noticing the issue.

On the main monitor at 1:1 the image is OK and in compare view on the secondary the image is OK, the problem returns when switching back to loupe. Once in this 'mode' it occurs for all images until LR is restarted at which point everything works OK again for some time, maybe minutes, maybe hours. 1:1 previews are already generated, monitors are at native resolutions etc -things work OK then they go bad until a LR restart.

 

[tobias2.4]

Hi Sjgibbon,

I still have not had any recurrences of that issue. I can't say what fixed it, but around that time I installed new versions of the drivers for both monitors and the graphic card. Esp. the latter might have helped? And then certainly a restart.

Good luck, Tobias

 

[dbrooks]

I have a problem with the secondary display -- I have matching Dell 24" display and the secondary display is not nearly as vivid. In other applications, the screens are the same.
Help !!
Please
Thanks
David H. Brooks
davidhbrooksphotography.com
[email protected]

 

[Brad Snyder]

David, welcome to the forums.

One possible issue:
Most likely, your video setup doesn't allow dual calibration. I.e., the most recently calibrated monitor profile is applied to both. There's a great deal of confusion around this on Windows, apparently video adapter manufacturers don't completely document whether their adapters provide the required dual lookup tables required for this function. You can be absoulutely sure of this by adding a second video adapter, but that's more complicated than it needs to be in the PCIe world, with most cards designed for 16x slots, and most available slots being 1x.

What are your calibration practices? What sort of video card?

 

[andersl]

Sorry for reopening this issue again -- but the original thread doesn't seem to come to a conclusion regarding what is going on.

I'm running Lightroom 2.7 on a Mac Pro using 1'.5.8. From my perspective it looks like the image in the secondary display consists of 2x2 pixel squares rather than 1x1. From time to time, Lightroom manages to display the picture in full resolution but more often not.

One thing I've noticed that wasn't mentioned in the thread is that it seems to be connected to whether or not the secondary display is in full screen more (Shift-Command-F11). When in non-full mode it always displays the full resolution. (It displays "Rendering: Higher Quality...".) However, when in full-screen mode it first (instantaneously) displays a really low-res picture before displaying this half-resolution (2x2) picture, typically no text is displayed.

I've got screen-shots of the two displays, but this rules of this forum prevents me from uploading them. I can send them any other way, should anybody be interested.