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AF misses. Canon

Started Oct 1, 2017 | Questions thread
brightcolours Forum Pro • Posts: 15,885
Indeed very soft

ohrid wrote:

It misses like without any reason in standard static scenes. It looks more like FF/BF but I tested lenses and they doing well. What do you mean "all AF points active"? I use automatic selection or single AF point from time to time.

Here are a few examples

https://photos.app.goo.gl/uurDU1YDmegbbMVJ3

The 1st image looks like it is misfocused AND some "camera shake", as if the IS was not settled yet when you took the image. You do not have the camera on "AI-Servo" AF mode, right? It should be in One Shot mode.

By the way, automatic AF point selection (all AF points active) is never a good idea, it will focus on the thing most in front (under one of the AF points, of course).

What happens when you press the shutter button twice (letting the camera AF twice) before pressing it all the way to take an image?

If all this is not the reason, it must be the camera/lens combination. I find it very odd that you have such severe issues with these lenses on the 450D. I know that some other lenses can have an issue with the 450D (I used to have AF inaccuracy with my 450D and Tokina 12-24mm f4), but I would not expect it with a 10-18mm IS STM.

In live view, the Tokina and my Sigma 18-50mm f2.8 EX DC would not focus accurately on my 450D. I now have a 6D , by the way.

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