What Lens Specification To Look For Sharpness At Distant Subjects When Cropped??

Started 2 months ago | Discussions thread
John Crowe
John Crowe Senior Member • Posts: 1,174
Re: What Lens Specification To Look For Sharpness At Distant Subjects When Cropped??

I have never heard of "perceived megapixel" and I would not trust any reference to this.

You can compare MTF charts if you want, but in 40 years I have never bothered.

Independent lens testers will often give resolution in lines per mm or line pairs per mm at centre/edges/corners.

I don't mean to be rude but generally the $5000 200mm lens is better than the $1000 200mm lens.  There are also 200mm lenses for a couple hundred that are pretty close to the $1000 one.

Price will actually tell you a lot.  Other than that searching the internet for specific lenses should give you an idea from users how they compare.  If it is Canon or Nikon the lens comparison site is a good reference too.

 John Crowe's gear list:John Crowe's gear list
Canon EOS 5DS R Canon EF 70-200mm F4L USM Canon TS-E 17mm f/4L Kenko Teleplus Pro 300 AF 1.4x Venus Laowa 12mm F2.8 Zero-D +15 more
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