P: Second Monitor initially not rendering image clearly.

This old LR 5 thread has been marked Solved years ago. Please add details of your issue to the new bug report for LR 10:

https://feedback.photoshop.com/conversations/lightroom-classic/lightroom-classic-monitor-2-in-lightroom-classic-blurs-when-i-try-to-work-in-develop-module/605df8a6d310b55034d40aed 

Though it is marked as In Progress, that doesn't mean it will necessarily get fixed in the next release.  Adding your details and clicking Like and Follow under the top post will make it a little bit more likely Adobe might prioritize the fix. 

Hi Benjamin,

Lightroom 5.5 user checking in to counter your "It's fixed" optimism - still not fixed. Still happening.

One could argue that this actually produces a "more accurate" image on the Secondary display at less than 1:1 view size, since the Develop module main display is slightly over-sharpened compared to actual Export output and the Library image. We've seen numerous complaints concerning this issue.

A better solution would be to fix the Develop module loupe rendering so that it is more accurate and then use the same image rendering for the secondary display.

Below is how things look on my Windows 7 computer. From the blurriness I see on my secondary monitor version, I suspect that LR is handing off a 1:1 view to the video driver using DirectDraw and the video driver is upsizing in the same way it does for videos, which is to smooth things out to make the pixel boundaries less noticeable. This is good for viewing video but less good for seeing exact pixel boundaries and sharpness with photo processing:

Not fixed, and that is because it is written this way. Yes, the delay for writing the image to the second monitor is faster, but it is not necessary.

Why is Lightroom rebuilding a new image to the second monitor? When it zooms in to the specified 1:1, 2:1, 3:1 etc... levels in the primary screen it doesn't have to build the preview, and it does it with the detail intact. Every pixel is there and you can see them at every zoom level.

The two monitors match in the library module!


The second monitor requires a preview? It needs to rebuild the image? Why? And that alone proves that the second monitor is a rendering and different in some ways from the primary monitor...

In the develop module the pixels disappear


Adobe,

Please just tell me that this is how it is supposed to work, and then explain why it has to be this way. There has to be a rational explanation.

I'll shut up and go away once you tell me why.

Todd,

It is not that I wouldn't dismiss it, it is that I do.

I wouldn't dismiss this being fixed based on what you're seeing at Zoom View sizes larger than 1:1 (i.e. 2:1 through 11:1). It's working on my Windows 7 64bit system, but it can take up to 4 seconds for the secondary loupe to render when browsing images in the Develop module. You may still see differences in sharpness between the primary and secondary displays when using 'Fit' or 'Fill' Zoom View settings. This is due to slight differences in the 2nd interpolation used to create the Fit & Fill rendered image. Try using the image pyramid Zoom View settings 1:8, 1:4, 1:3, and 1:2.

The issue I see is not addressed. The second monitor image is not the same as the primary. When zoomed in the secondary monitor does not and never will show the pixels. This tells me that this is a rendering of the file at various magnifications. The image on the primary monitor does show the pixels.

I want to see the same image on the secondary monitor as the primary down to those tiny pixels.

So, no it is not "fixed"

Thanks Ben it is indeed fixed at least on my system!