Lightroom Classic Develop Mode shows two exposures

[cherylb40396913]

Hello everyone,

I am having a tough time figuring this one out.  When I import images into Lightroom (Nikon D850 RAW)  they change luminance.  When I click on an image in develop mode the thumbnail is darker, when I click on a different image that one I just deselected brightens up.  This just started happening.  I am doing time lapses and when I edit an image, them move to another image the one I just edited is no longer correct as it changes luminance.  This is crazy behavior.  I need the thumbnails to stay consistent so I can look at my keyframed sequence for lighting.  I have ensured that the files in Bridge are set to SRGB and also in Lightroom.  I really could use some help as to why this is happening and how I can prevent it.  Right now it is very difficult to process a 500 image time lapse.  I shot this little video to show you whaat I am referring to.

Very much appreciate any assistance I can get.

Joe

[Ian Lyons]

You've imported the images using the embedded preview settings. Ideally, you should have used Standard-sized. Fortunately, you can easily correct the issue by going to the Library > Previews and choosing Build Standard-sized Previews

[cherylb40396913]

Tank you, Ian.  That seems to have worked.  How would I set the default to import Standard Previews, if you don't m,ind sharing that nugget?

Joe

[Rob_Cullen]

In the Import dialog 'File Handling Panel'- Choose from the 'Drop-down menu-