Nikon D7100 left focus issue

Started Apr 19, 2013 | Discussions thread
Petroglyph
Senior MemberPosts: 3,116Gear list
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Re: Wrong lens
In reply to amobi, Apr 21, 2013

amobi wrote:

lock wrote:

The af aperture is 3.5. You need a faster lens to notice it. On the other hand, if you do not use faster lenses there will be no problem with the outer sensors.

Lock

I was going to say the same thing about the lens used but sometimes it is better to leave these guys alone and let them be happy with their camera.

Sometimes it is better to leave You guys alone to be unhappy with your camera.

I tested mine with Sigma 35/1.4 and Nikon 50/1.8G and they both were blur with left AF point. Center was crazy sharp and right is somewhat sharp but not as center so I returned it.

It is an APS/C camera, my Nikkor 35mm is a little softer on the edges especially at f/1.8 so both outer focus points look a little softer.  That is no surprise to me.  With a sharp to the edges lens such as the 16-85 even at close distance and f/3.5 still sharp at the edges and focuses well.  APS/C lenses often have notoriously curved focal plane which cause the edges to look a little softer on many occasions (short DOF).  So yes with the 35mm at open apertures the outer focus points look softer.

Seeing what I can do now with my D800 all 51 points, I can't see myself settling for anything less. I can dial any point on my D800 after the firmware update and nail focus with ease. It is a beautiful thing to see. It makes shooting so much easy.

Maybe they will improve left focus point with firmware the same as D800?

Now that I know it is possible I can't have it any other way.

I sold my Canon 6D so fast for D7100. So far so good but the left side has to focus

The 6D is horses for courses and very good for certain types of shooting.

properly. As far as I'm concerned some D7100 has left AF issue period. My replacement will come tomorrow we shall see.

Why didn't you sell your D800 when it wasn't working?  You sold D600 for 6D then sold that one for D7100 and you are now waiting for another D7100?  I'm just trying out this D7100 and can still send it back.  So who is "these guys" now?

Don't take me wrong.  If you're unhappy you're unhappy, so be certain to get what you want.  Try to make less assumptions about others along the way maybe we'll be willing to help out if we can.

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