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Some help with my new 10-18mm IS STM please?

Started Dec 7, 2016 | Discussions thread
bent christian Senior Member • Posts: 1,663
Re: Some help with my new 10-18mm IS STM please?

trulandphoto wrote:

bent christian wrote:

Looking at the two full-resolution photos, I can't find anything in focus. Absolutely nothing. The issue appears to be something other than than diffraction at f/11. Diffraction would be minimal at this aperture in a crop sensor.

Like I said, diffraction starts on this sensor at f/5.9 at normal focal lengths. super wide like this would be even larger aperture.]

Diffraction does not present itself like this in crop sensors at f/11.

Some areas would still show focus.

"focus" and softness are different things but can be confused. Diffraction results in softness. At 10mm and f/11 on a crop sensor you could almost focus anywhere and the entire shot is "in focus."

Even if I defocus my lens?

The fact that you don't see anything "in focus" indicates it's not a focus issue.

Ummm....no. It does not indicate that definitively at all. If the lens isn't focusing correctly or the user is in error, it would be entirely possible to capture nothing in focus.

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