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I'm currently using a Canon 7d Mk2, and interested in upgrading to a full-size sensor, for better low-light performance and larger field of view. Finding I need to pull up shadows frequently,--more than is sometimes possible with current setup-- or get a large architectural feature in the frame without backing up to Shanghai. There are lots of shots I would like to take but don't, because of the need for high ISO or shooting underexposed and fixing later. Am looking at the Sony a7R3 with their 24-105 f4 lens. That, and the Nikon D850 are being reported as being at the top of the list for dynamic range and high ISO performance. My question for those who are using large MP cameras and LR is: will processing speed in LR slow significantly when I move from a 20MP sensor to a 42MP sensor? Do you find it problematic? Logical comeback question is--what computer am I using? 1) LR Classic CC, latest update. 2)Dell Inspiron 15 7000 gaming laptop, with Intel i7 processor at 2.8GHz, 16GB ram, Nividia GTX 1060 graphics card, Windows 10. 3)Monitor is a Dell 4K, 3840 x 2160, 24", 30Htz. Will be grateful for your comments. --Michael

I'm reminded of some questions I've had while processing photos of a granddaughter's graduation in a large hall. I've shot images in generally dark locations, and of other granddaughters in figure skating shows, etc, and used different techniques. I've decided that--"it depends". For just generally dark locations, I've just cranked up the ISO. For the figure skating shows, what seems to work best is manual control, for exposing the best-lit areas (shows with spotlights and other concentrated lighting). For yesterday's graduation in the DC-area classic graduation setting (DAR Constitution Hall), with pretty good general house lighting and a spot-lit stage, I decided to go with ISO 6400, -1.0 exposure control, and Program mode, to account for the variations in lighting and the overall general darkness. For post-processing, I get the exposure to what looks good to me, then do noise reduction and sharpness. I'm satisfied with the results from the graduation (using a Sony a6300 and 18-105mm f4). I should say that I sometimes use negative EV in these situations so that the camera doesn't try to make the scene look like daylight. Questions: What are your general techniques for dark venues? When noise reduction will be required, what's your sequence of Clarity and Sharpening vs NR? thanks Bill