Article about stopping down lenses

[kvbarkley]

He includes the 24-70L

https://www.lensrentals.com/blog/2019/11/stopping-down-some-bargain-primes-and-zooms/ 

Includes a bonus on how to check for field curvature.

[shadowsports]

Hey KV,

My Sigma 24-70 is included in the article.

TY 🙂

[kvbarkley]

I know some here pooh-pooh the physics aspect of lens measurements, but being an engineer, I really appreciate Roger Cicala and all the hard work he does at LensRentals.

[Waddizzle]

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@kvbarkley wrote:

I know some here pooh-pooh the physics aspect of lens measurements, but being an engineer, I really appreciate Roger Cicala and all the hard work he does at LensRentals.

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It is a human survival instinct to initially reject that which we do not understand.  I can appreciate the scientific method, too.