SteveL54

One thing you have to keep in mind when reviewing the AF selection point indicator in ViewNX2 is that it can't account for the image shift due to VR. You may have had that cardinal dead center in...

Yup. It can be difficult to determine whether a camera or lens is at fault. Camera based problems don't always show with all or even some lenses. Sometimes just one lens will will have a problem...

If it is aligned correctly with the VF bracket the AF should be sensitive to details just above and below the indicated bracket. The brackets are always somewhat smaller than the true sensitive...

I don't know why this didn't occur to me yesterday when I first answered your question, but debris in the bottom of the mirror box can play havoc with autofocus. This has been mentioned by others...

That's way too low of a yield to be aceptable. When photographing children one should expect a few OOF shoots when the DOF is narrow (f/2.8 or brighter). They may move (and the photog if not...

Lori, When you take a set of photos like these, how many turn out OK vs OOF as shown? Actually this happens with some of my lenses as well. The slight jump usually isn't big enough to...

Lori, I'm sorry to read that the service trip didn't fix the camera. Your camera isn't the first to need a second trip. I understood that when you tested the camera using the target I...

Sven, Yeah I know I didn't directly answer your question about other or newer cameras being better in this situation. I never used a D200 so I can't make the comparison. I have a D70 and...

The only issue I've found with Tim Jackson's chart is that it requires that the test be tested very close to the target. With some lenses it's not far that from the MFD. For a 35mm lens I won't get...

Aside from the obvious back focus something else isn't right. Have you been leaving VR on while mounted on the tripod? The 70-200mm VR1 does not like to have the VR engaged while it's firmly...

Yeah I see it on my monitor. The magenta cast shows up on the neutral grey of the chair back and the shadow under the desk -- in both lower corners of photo. Steve

I've found 1/10s with the 70-200mm VR is about the worst shutter speed to use on a tripod. When you use longer exposures most of the exposure takes place after the rig's vibration has settled...

Very nice photo. The typical viewfinder AF uses what's called phase detection (PDAF). It doesn't measure contrast, per se, like live view based contrast detection AF (CDAF). Of course, PDAF...

The D1 series, D70, D50, and D40 cameras all had a global electronic shutter that avoided the flash synchronization issues of the more common mechanical focal plane and rolling electronic shutters...

Leonard, We had these discussions a while back. Don't you...

Leonard, You are welcome. I wasn't just trying to be pedantic about your use of the term beam splitter. Beam splitters have been used in AF systems, but to the best of my knowledge, not in phase...

I can't speak directly for the D50, but it used the same sensor as the D70. It's possible that Nikon changed the IR filter somewhere along the sensor assembly's production run. See my test...

Leonard, I've studied several patents on PDAF and I haven't seen any with beam splitters inside the PDAF unit. Of course there is a pair of images involved, but *beam splitters* as mentioned...

Lori, If the only problem is VF AF bracket misalignment then I'd just send in the camera body. I'd send lenses in if the chart tests showed focus errors, because it's not easy to distinquish the...

It works off the same principle. Why would the Nikon manuals refer to the manual focus assist indicator function as the electronic rangefinder? Are you trying to say that the beam splitter...