Bullseye Artifact on Long Exposures
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By mirrorlessNY(youtuber)Hi, wonder if anyone is familiar with this, A7Riii has 42mp sensor while A7iii is 24mp, what effect does pixel size have on low light video, besides the obvious max ISO limit, thank you
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By SFBobI'm a new A7R iv owner and been playing around with bracketed HDR using long exposure times on my tripod mounted camera. Ive attached a shot I took yesterday (edited with Aurora HDR). I originally tried to shoot this at an aperture of f 11 with an iso of 100, but the exposure time would have been > 30 sec (which is the slowest exposure time offered in the setting for keeping the iso at 100). Only at f 4 could I get the slowest bracketed exposure time to be less than 30 sec. I did constrain the iso to be 100, but is there some limit on exposure length that I am not aware of? Arguably, I'd like the camera to take all the time it needs to shoot the image at the chosen aperture and chosen iso setting. I'm sure I've done something wrong in the setup, but I'm not sure what!
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Hi. As per another post, I am having issues with a La-ea4. My question is...if this was on a Sony A7 mkII but is now on a Sony A7 mkI, would the firmware from the MkII update the La-ea4 so that it operates differently when placed on a mkI? Alan. -
Interesting thought, loosing a bit of focus distance at the far end wouldn't matter much when shooting macro. It would certainly help to increase the working distance. Keep us posted on your findings! -
How do you connect the PC cable to the camera ? There seems to be no PC socket on the A7RII body -
This seems to be relating to the Aperture. If I set a custom button to DOF preview, the aperture does not get applied to the lens and after 3 cycles it comes up with F--. Also as I was performing long exposures I hadn't noticed the real issue. If I set aperture to f4, for example, the image was fine. If I set it to f16, the image was blown (in aperture mode). It seems that the aperture I set on camera was not working with the lens and it was shooting wide open with a shutter speed to match the a
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trigger cable is a flash pc-synch socket cable. Flash mode fill flash.
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