Non CPU lens on D7200: I now own a Nikon D7200 purchased after I wore out my D7000. I also own a Micro-Nikor 105mm 1:2.8 #1455 Non CPU lens. When mounted on the D7000 I was able to...

GKarl Loc: Northern New Hampshire

I now own a Nikon D7200 purchased after I wore out my D7000. I also own a Micro-Nikor 105mm 1:2.8 #1455 Non CPU lens. When mounted on the D7000 I was able to change aperture in M and A mode using the sub-dial and without having to turn the aperture ring. I entered the lens data on the D7200 in the non cpu setup menu.
The issue is that for some reason the sub-dial does not change the aperture. I haven't use the lens for a few months and know I am forgetting something. Any help will be greatly appreciated. Thank you in advance for your help.

Screamin Scott Loc: Marshfield Wi, Baltimore Md, now Dallas Ga

I don't think the subdial can change the aperture on either camera as the lens has no CPU contacts to transmit the info to the camera... I use several non-cpu macro lenses on my D7100 and always use the aperture ring to change the aperture...

BebuLamar

None of the Nikon DSLR can change the aperture of a non CPU lens with the sub command dial. I think the OP remember not correctly.

brent46 Loc: Grand Island, NY

Set the aperture ring on the lens to the smallest opening, highest number. all will work fine in the a or m mode.

Screamin Scott Loc: Marshfield Wi, Baltimore Md, now Dallas Ga

brent46 wrote:

Set the aperture ring on the lens to the smallest opening, highest number. all will work fine in the a or m mode.

That would be true if the lens had CPU contacts but the OP said it doesn't...

flyboy61 Loc: The Great American Desert

Wrong info....apologies!

Screamin Scott Loc: Marshfield Wi, Baltimore Md, now Dallas Ga

flyboy61 wrote:

Gail;
The non-cpu lenses have a switch, an unobtrusive little devil, which must be moved so the little red mark on the switch is next to a red dot on the lens. Then, you can change your aperture with the subdial. How do I know this? Don't ask!

That "switch" is only present on auto focus lenses with CPU contacts. Older manual focus lenses don't have that switch...

flyboy61 Loc: The Great American Desert

Screamin Scott wrote:

That "switch" is only present on auto focus lenses with CPU contacts. Older manual focus lenses don't have that switch...

Oh, O.K. & Woops! Thanx!

GKarl Loc: Northern New Hampshire

BebuLamar wrote:

None of the Nikon DSLR can change the aperture of a non CPU lens with the sub command dial. I think the OP remember not correctly.

I must admit that l only used the lens a few times on the D7000, but I am somewhat sure that setting the aperture at the highest number allowed the dial to change the aperture. However, I wouldn’t bet my life on it. The idea of locking the aperture in place sounds familiar. I will check it out.

Screamin Scott Loc: Marshfield Wi, Baltimore Md, now Dallas Ga

GKarl wrote:

I must admit that l only used the lens a few times on the D7000, but I am somewhat sure that setting the aperture at the highest number allowed the dial to change the aperture. However, I wouldn’t bet my life on it. The idea of locking the aperture in place sounds familiar. I will check it out.

You say the lens is a Non CPU lens. Is it an autofocus lens?
Look for the contacts.... If no contacts, no ability to change the aperture with the dial...
https://www.nikonimgsupport.com/eu/BV_article?articleNo=000006511&configured=1&lang=en_GB

BebuLamar

The only Nikon camera I know that can change the aperture of a non CPU lens is the FA but it only changes the aperture in P and S mode. In A and M mode you still have to use the aperture ring. Non CPU lenses do not have the lock to lock it in the minimum aperture.
If the camera can changes the aperture via the sub command dial it would support P and S modes as well rather than restricted to A and M. Non CPU lenses can only be used in A and M modes because the camera can not set the aperture of the lens.

GKarl Loc: Northern New Hampshire

I found this. But, for some reason it doesn't work for me.
https://youtu.be/S5wSwn9HNBo

Screamin Scott Loc: Marshfield Wi, Baltimore Md, now Dallas Ga

GKarl wrote:

I found this. But, for some reason it doesn't work for me.
https://youtu.be/S5wSwn9HNBo

He's not using the sub-command dial to change the aperture, he's using the aperture ring. The video is simply showing how to set up a Nikon DSLR that meters with MF lenses to be able to use a MF lens and get EXIF info.... Nothing to do with changing the aperture via the sub-command dial

GKarl Loc: Northern New Hampshire

Screamin Scott wrote:

He's not using the sub-command dial to change the aperture, he's using the aperture ring. The video is simply showing how to set up a Nikon DSLR that meters with MF lenses to be able to use a MF lens and get EXIF info.... Nothing to do with changing the aperture via the sub-command dial

Looking at the video a second time I do believe you are correct. I must be recalling things incorrectly. Turning the aperture ring is not any more difficult so it really is not an issue. Thank you.

brent46 Loc: Grand Island, NY

The cpu has nothing to do with the aperture. I use older non cpu lenses on my d7100 al the time. Set it at the smallest aperture and go.