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Back focus?
Mrs. Prout Has a Camera
Registered Users Posts: 93 Big grins
I shoot on a Canon 50D - usually with my 24-70 f2.8 lens. Has anyone experienced any problems with back focus?
For example- If I place a person in front of a wall and stand a few feet in front of them and take a head shot- it will come out perfectly crystal clear with no blurring etc.
If I back up to about 8-10 feet away from the subject- suddenly I lose that sharp focus on the person, and the wall tends to be in focus instead.
I always make sure my focal point is center weighted and this even happens if I use a tripod.
For example- If I place a person in front of a wall and stand a few feet in front of them and take a head shot- it will come out perfectly crystal clear with no blurring etc.
If I back up to about 8-10 feet away from the subject- suddenly I lose that sharp focus on the person, and the wall tends to be in focus instead.
I always make sure my focal point is center weighted and this even happens if I use a tripod.
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Sam
That's exactly what I mean. Center focus point is always used, and it doesn't matter if I use a tripod or not. This isn't a camera shake or motion blur issue. I think my camera/lens may have a focus issue.
OK, I have a Canon 24-105 L f4.0 lens that I have always been dissatisfied with at f4. Two weeks ago I said self, "send the darn thing into Canon, ya got nothing to loose". Well it turns out the auto focus was off. Now it performs well throughout the f range. I could not see any back focus or front focus issue at f4.0, so not sure exactly how / what was adjusted.
Happy me.