Camera vs lens
Aug 8, 2018 07:56:26 #
jfdnp
Loc: Coastal Connecticut
I have a Nikon D 750 that originality came with a kit zoom lens. In taking some shots of distant targets, I note they are out of focus but this decreases as I zoom out. I am sure the autofocus tabs on both the camera body and lens are set correctly to AF. Querying the photo data for the shot indicates manual focus. This does not occur with my prime lens (50mm 1.4). Any thoughts?
Aug 8, 2018 08:13:01 #
LWW
Loc: Banana Republic of America
Dismount and remount the lens making sure it is completely locked on.
Next step clean the contacts.
Next step clean the contacts.
Aug 8, 2018 08:22:14 #
Yes, clean the contacts. As a precaution, when you mount a lens, make sure camera is OFF.
Aug 8, 2018 12:48:40 #
This might be a case of asking too much of the lens.... At lower aperture settings (4.5-7.1) there can be softness (not to be confused with out of focus). Try using an aperture setting in the 8-12 range and see what happens
without images attached, it is hard to diagnose problems....
best
without images attached, it is hard to diagnose problems....
best
Aug 8, 2018 14:19:14 #
swartfort wrote:
This might be a case of asking too much of the lens....
At lower aperture settings (4.5-7.1) there can be
softness (not to be confused with out of focus). Try
using an aperture setting in the 8-12 range and see
what happens
without images attached, it is hard to diagnose problems....
best
This might be a case of asking too much of the lens....
At lower aperture settings (4.5-7.1) there can be
softness (not to be confused with out of focus). Try
using an aperture setting in the 8-12 range and see
what happens
without images attached, it is hard to diagnose problems....
best
Read the OP !
This will not correct the problem. He enables AF
and relies on AF only find that the camera is not
using AF and acoarst no one is manually MF'ing
neither. No images need be attached.
`
Aug 8, 2018 14:33:42 #
The OP says that he checked the auto focus to make sure that both the camera and lens were set to auto focus. Now, what he did not say was what auto focus program he had it set at. Just because someone chooses auto focus DOES NOT mean that an image is by default out of focus. BUT you are correct in that I did not factor in that he may be using an IMPROPER auto focus mode for what he is trying to accomplish.
So, I'll back up and suggest that the OP use single point focus, af-s, and zoom into a subject/object at about the same distance that was causing he/she problems that caused the original post. THEN see if the camera is focusing on the wrong (or too broad of) an area. If that is not the situation, I stand by my advice.
So, I'll back up and suggest that the OP use single point focus, af-s, and zoom into a subject/object at about the same distance that was causing he/she problems that caused the original post. THEN see if the camera is focusing on the wrong (or too broad of) an area. If that is not the situation, I stand by my advice.
Aug 8, 2018 16:29:33 #
`
Yup !
That should cover all the bases ...
assuming a tripod or equivalent
steady support.
`
Yup !
That should cover all the bases ...
assuming a tripod or equivalent
steady support.
`
Aug 8, 2018 16:37:53 #
jfdnp wrote:
... but this decreases as I zoom out.
How about human error at longer focal lengths. We all need a steadier hand the longer the lens.
--
Aug 8, 2018 17:24:10 #
Bill_de wrote:
How about human error at longer focal
lengths. We all need a steadier hand the
longer the lens.
--
How about human error at longer focal
lengths. We all need a steadier hand the
longer the lens.
--
How about camera error. The camera is
not responding to the AF control setting.
Exif shows MF when the physical controls
show AF. Read the OP.
It could be human error, somewhere in
the settings, but unsteadiness is not the
type of human error involved.
`
Aug 8, 2018 17:47:12 #
`
Check this, nikon's own words, cut-n-paste:
"M/A"
"Select ... lenses have a focusing
mode which allows switching from
automatic to manual focusing with
... no lag time by simply turning
the focusing ring on the lens."
If that means exactly what it says, that feature may
well be the problem. Maybe you AF the scene via the
default method, the shutter button. But in gripping
the lens you disturb the MF ring [happens to me all
the time]. Now you're out of focus.
If nikon means exactly what they say above, that
accidental little spin of the MF ring put you into MF.
Your exif file shows MF in use. And if that little turn
of the ring really literally put you into MF mode, the
shutter button will not activate the AF when you do
find the best moment to shoot.
Acoarst this assumes nikon means exactly what it
says in their poorly written material :-(
`
Check this, nikon's own words, cut-n-paste:
"M/A"
"Select ... lenses have a focusing
mode which allows switching from
automatic to manual focusing with
... no lag time by simply turning
the focusing ring on the lens."
If that means exactly what it says, that feature may
well be the problem. Maybe you AF the scene via the
default method, the shutter button. But in gripping
the lens you disturb the MF ring [happens to me all
the time]. Now you're out of focus.
If nikon means exactly what they say above, that
accidental little spin of the MF ring put you into MF.
Your exif file shows MF in use. And if that little turn
of the ring really literally put you into MF mode, the
shutter button will not activate the AF when you do
find the best moment to shoot.
Acoarst this assumes nikon means exactly what it
says in their poorly written material :-(
`
Aug 9, 2018 05:42:51 #
Aug 9, 2018 06:57:38 #
swartfort wrote:
...suggest that the OP use single point focus, af-s...
Aug 9, 2018 10:42:06 #
Dale Evans - Amaetur
Loc: Baton Rouge, La
Easy to solve, go old school and use manual focus, it works on all settings.
Pre 1977 that was all we had and we still managed to get a few pretty good photos and a lot of great images.
Dale
Pre 1977 that was all we had and we still managed to get a few pretty good photos and a lot of great images.
Dale
Aug 9, 2018 13:50:54 #
Bill_de wrote:
How about human error at longer focal lengths. We all need a steadier hand the longer the lens.
Exactly.
And holding a camera perfectly steady while shooting is an acquired skill requiring a lot of concentration and dedicated practice. There is no magic button on the camera which can instantly improve hand technique.
Aug 10, 2018 04:06:12 #
rook2c4 wrote:
....... ..... .. ..... . .. .
no magic button on the camera which
can instantly improve hand technique.
....... ..... .. ..... . .. .
no magic button on the camera which
can instantly improve hand technique.
Disagree. While much silly BS has been
built into current cameras, stabilization
is one of the few excellent and practical
benefits that has somehow snuck in :-)
`
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