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Lack of sharpness at f1.8 on Canon 50mm STM

Started 4 months ago | Discussions thread
Chris R-UK Forum Pro • Posts: 22,842
Re: Thanks
2

SD19194 wrote:

Thanks. Just strange how it’s made as an f1.8 lens yet it’s barely usable at that aperture. Then again at 1:20 in this review video there are no comments on issues with sharpness at 1.8 and the middle does seem to be very sharp(?)

https://youtu.be/x_7raMVLPeE

You say use 1.8 for when I really need it but if it’s never going to be sharp then when would I ever need to?

An example would be if you need to shoot in very low light and the only way to get the shot is to use f/1.8.  Whenever I travel I have two small, fast primes in my camera bag for exactly these situations.

The other point is that, unless you are going to crop your image very severely or you are going to make very large (e.g. 20"x30"} prints, then the sharpness at f/1.8 may well be fine for a lot of your photography.

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Chris R

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