How to remove shadows on dslr sony a5100

luizcrf

luizcrf

luizcrf

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28 May 2020
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Hello everyone!
Two weeks ago I bought a Sony a5100 with 16-50 lenses (Model SELP1650), but when I started filming I noticed shadows around the image.
I researched forums about the problem, and saw that it could be an effect called 'vignette'.
I shoot with the setting 1/80 F5.6 and ISO around 400 to 600 (with 3 lamps of 60w in a room of 3 meters by 3 meters)
and I was recommended to set the camera to 1/60 F11 and a higher ISO (around 2000)
I put this setting, but with the ISO increased, the image is very saturated.
Is there any other solution to remove these shadows?
The camera is very good, and the focus is fast, but this problem with "shadows" (or "vignettes") is putting an end to my filming.


The image below is part of a shot on a white wall
Configurations: 1/80 F5.6 and ISO around 400 to 600 (with 3 60w lamps in a 3 meter by 3 meter room)
https://imgur.com/yRsQuai
 
You gave all the figures apart from the most important one : what focal length your shooting at!

If you knee deep in <30mm I wouldn't be surprised that a lens like that is vignetting. You could fix in post if it's easy ( like in your pic) but unfortunately theres a reason why lenses vary in price so much and thats because the more expensive ones generally are engineered better to limit issues like this.

Given the small nature of the lens it likely has mechanical vignetting so all these settings people are giving you isnt going to change much.
 
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I don't remember getting vignetting on my a6000 with the 16 50. Perhaps I never noticed it, I also didn't shot much white.
Try 18mm perhaps that's just wide enough to not notice it.
 
That lens is not at its best at 16mm. Is best in the middle focal lengths. You shouldn't need anything like f11. Try 20mm at f5.6 or something around there. If that's no good experiment around in the 20mm to 40mm range if you can.
 
There is also in camera correction for geometry / vignette if you turn it on. I don't think it applies to raw or video though. Not sure but might be worth playing with.
 
The lens is to blame, the 16-50 is notoriously bad for vignettes, its one of the worst lenses Sony has ever produced.
To reduce the effect stop down the aperture to f7.1 this will of course effect the ISO / Shutter speed or turn on the inc camera corrections as stated above.

However I guess that because you stated ‘it’s put an end your filming’ you also want to use in video? I’m not sure if the in camera corrections work in video to be honest.
 
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