D5100 has trouble to focus through viewfinder.

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Pe11e

Senior Member
Strange issue. When I'm taking photos using viewfinder, either with 18-55 or 35 F1.8, let's say that 80% of subjects on photos are (slightly) out of focus, using any of 11 focus points. I exprimented with various focus modes, and somehow with AF-C and 3D I get best results, but it can choose focus points I do not want. With single point AF, 80% of photos are out of focus. Using liveview, 100% of photos are properly focused. I know that in liveview camera is using contrast in colors to focus, but I'm confused why it doesn't work properly via viewfinder? I did a factory reset two times (via menu and by holding MENU+INFO button for 2 seconds) as someone recommended when you have focus issues, but it didn't changed nothing, still having the same issues.

Any guess? Camera is almost new, 8k shots so far, checked via shutter count.

Thank you in advance!
 
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mikew_RIP

Senior Member
It could be back or front focus,is the focus always in front or behind the point you want,we are talking auto focus and not manual if its manual try adjusting your diopter setting in the viewfinder.
 
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Don Kuykendall_RIP

RIP :(
mikew said:
It could be back or front focus,is the focus always in front or behind the point you want,we are talking auto focus and not manual if its manual try adjusting your diopter setting in the viewfinder.
Click to expand...

The D5100 can not be adjusted. You have to move up the the 7?00 to get that feature. Are you trying to focus manually or using the auto focus?
 
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Pe11e

Senior Member
I have trouble with AF, and I think back focus. When I'm taking photos of the whole class in front kf the school (group photo) it almost always focus the building, not the face of the student, as I'm focusing always the face or eyes via one of the focus points. With liveview focusing is perfect.

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Last edited:
D

Don Kuykendall_RIP

RIP :(
Pe11e said:
I have trouble with AF, and I think back focus. When I'm taking photos of the whole class in front kf the school (group photo) it almost always focus the building, not the face of the student, as I'm focusing always the face or eyes via one of the focus points. With liveview focusing is perfect.

Sent from my LG-E975 using Tapatalk
Click to expand...

Your camera does not have the ability to adjust back focus you would have to send the camera and lenses to Nikon


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