Even though we ARE Nikon lovers,we are NOT affiliated with Nikon Corp. in any way.

English German French

Sign up Login
Home Forums Articles Galleries Recent Photos Contest Help Search News Workshops Shop Upgrade Membership Recommended
members
All members Wiki Contests Vouchers Apps Newsletter THE NIKONIAN™ Magazines Podcasts Fundraising

What to do? Bad lens? Bad D7000 body?

Omaha

Omaha, US
566 posts

Click to send email to this author Click to send private message to this author

"RE: What to do? Bad lens? Bad D7000 body?"

Omaha Registered since 07th Jan 2012
Thu 31-Jan-13 09:12 PM

Excellent help, everyone! This forum rocks!

Its a Nikon. I bought it from Amazon, and just dropped it off at the UPS Store. Mainly I was running out of time for my return window, so I needed to make a decision.

I'm intrigued by this comment:

>I wouldn't return your 50mm based on those focus tests. To
>have so little light that you needed ISO 1000 at f/1.4 isn't
>giving the AF system much of a chance, and the depth of field
>at f/1.4 is wafer thin. Your choice of focus target was also
>far from ideal. The centre cross focusing point is also quite
>large

What it suggests to me is that my real problem here is one of expectations. I do mainly portrait photography. What I want is to be able to put the focus point on the subject's eye and get a nice, sharp exposure, automatically, with at least a 50% "hit rate".

Maybe that's just not realistic with a 50mm f/1.4?

I get that the combination of my test subject and lighting were sub-optimum, but that was somewhat by design. Real world shots don't occur in idealized conditions. This process started because I noticed I was getting a very high rate of missed focus shots (maybe one in 15 or 20 being acceptable). Most of those were taken in outdoor daylight.

Is it unreasonable to expect to shoot a 50mm f/1.4 AT 1.4 and get consistent AF hits? I realize that the DOF on that lens is going to be razor thin. At the same time, I expect that if I carefully compose the shot, putting the AF target right on the subject's eye, I should get a decent hit rate. Are my expectations way off?

The way I calculate it, at a distance of five feet (at f/1.4 and with my crop sensor D7000), I should have a little over an inch of usable in-focus depth. That should give the camera a bit of margin for error to get the eyes in focus. Is there something wrong with my calculations there? Is that too narrow a DOF window for reliable AF control?

In any case, having returned the 50, I'm thinking of trying something longer (85mm? 105mm?) What I want is something that can totally wash out the backgrounds while getting a sharp hit on the subject. Maybe trying out the 50mm was doomed from the start...

Visit my Nikonians gallery
Most of my Nikon photos end up here.

This is a hot, active topic! What to do? Bad lens? Bad D7000 body? [View all] , Omaha , Thu 31-Jan-13 01:31 AM
Subject
ID
Reply message RE: What to do? Bad lens? Bad D7000 body?
1
Reply message RE: What to do? Bad lens? Bad D7000 body?
2
Reply message RE: What to do? Bad lens? Bad D7000 body?
3
Reply message RE: What to do? Bad lens? Bad D7000 body?
5
     Reply message RE: What to do? Bad lens? Bad D7000 body?
9
Reply message RE: What to do? Bad lens? Bad D7000 body?
4
Reply message RE: What to do? Bad lens? Bad D7000 body?
6
Reply message RE: What to do? Bad lens? Bad D7000 body?
7
Reply message RE: What to do? Bad lens? Bad D7000 body?
8
Reply message RE: What to do? Bad lens? Bad D7000 body?
12
Reply message RE: What to do? Bad lens? Bad D7000 body?
10
Reply message RE: What to do? Bad lens? Bad D7000 body?
11
     Reply message RE: What to do? Bad lens? Bad D7000 body?
13
     Reply message RE: What to do? Bad lens? Bad D7000 body?
14
          Reply message RE: What to do? Bad lens? Bad D7000 body?
15
               Reply message RE: What to do? Bad lens? Bad D7000 body?
16
                    Reply message RE: What to do? Bad lens? Bad D7000 body?
17
                         Reply message RE: What to do? Bad lens? Bad D7000 body?
18
                              Reply message RE: What to do? Bad lens? Bad D7000 body?
19
     Reply message RE: What to do? Bad lens? Bad D7000 body?
26
Reply message RE: What to do? Bad lens? Bad D7000 body?
20
Reply message RE: What to do? Bad lens? Bad D7000 body?
21
Reply message RE: What to do? Bad lens? Bad D7000 body?
22
     Reply message RE: What to do? Bad lens? Bad D7000 body?
23
          Reply message RE: What to do? Bad lens? Bad D7000 body?
24
               Reply message RE: What to do? Bad lens? Bad D7000 body?
25