EOS M50 out of focus

[NickSlav]

here wo go again (((((( I have an issue with my m50. i made a studio shoot with sigma 18-35 with original canon adapter (manual mode iso100 1/200 f2.5) with narural light, and i noticed that raws miss detalization and they are back focused (((( Leens have been tested on many bodies and it works fine. Canon DPP show focus point on face. What is the problem can be? Why only on my m50 this lens have  strong back focus ?

 Jpeg with exif

[zakslm]

Brian,

Before offering my "non-expert opinion, I'd like to get your opinion on what I think may be the issue and a possible solution for the orginal poster.

I'm guessing that the face of the model is not in sharp focus (but the background is) because teh AF area select mode is "Face detection + Tracking AF" per the EXIF data.  

Again, my guess  is the the "Tracking AF" was hunting and focused on the background instead of the face and eyes.

My camera doesn't have face detection, but in order to get the model's face in focus, I would have chosen the Center focus point (I have a T7 with 9 focus points) One Shot AF, focused on the models left eye and upon hearing the beep, taken the shot.  

What do you think?  

[p4pictures]

Face detection + tracking AF is the name used for the whole frame being the AF area. It's a little like using your T7 with all AF points, but the M50 has AF points all over the frame and has intelligence to identify and prioritise faces. The EOS M50 also has 1-point AF like your Rebel T7, but where you can put the AF point at one of 9 places, the EOS M50 can put it in up to 143 different positions depending on the lens used.

One of the biggest changes in my own way of working when I went from DSLR to mirrorless was to switch away from the old way of "put the AF point on the subject, focus, then recompose". I now let the camera put the focus point on the subject, trusting it to get it right almost all the time, and me to compose as my priority. This has lead me to compose my shots better as I can devote my brain to composition and let the camera deal with AF. 

[Tronhard]

Here are the full details for the RAW Image, as shot:

[Waddizzle]

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@Tronhard wrote:

Here are the full details for the RAW Image, as shot:

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I do not see anything that jumps out at me as wrong with the photo.

I do not underhand how one can conclude that the camera?lens combo is back focusing from a “one off” photo.  I see no evidence of back focusing, probably because this is not a test shot.  It looks comparable to the images from my M3, which come nowhere close to being as sharp and detailed as images captured by my full frame bodies.

My advice to the OP is check the firmware in your lens.  Accept the fact that every shot you take will not be a keeper.  If you have doubts with this lens, then capture some formal test shots.  This “one-off” photo proves absolutely nothing.

[NickSlav]

Yep this photo is "one off" but the same situation with 50% or more  photos from this set. (((( so i cant upload all raws 

[NickSlav]

And i have from this set 600 raws and 300 of them with that issue 

[Waddizzle]

What is the basis for your conclusion of back focusing in your sample images?  The image of the face has been cropped down 400x300. Is that your evidence?

[jrhoffman75]

A thought.

If your shooting is of images similar to this why not select One Shot AF? Subjects aren't moving and subject faces are clear. No need to rely on camera detection and focus judgement.