Nikon Lenses on AF100 with Adapter... Can you move the Aperture?

owaltec

owaltec

Well-known member
Hi guys,

Ive been testing my AF with some nikon lenses, using the Adaptimax adapter. I haven't found a way to move the aperture on my lenses, or better put, you can move it, but it has no effect whatsoever on the image. Is this normal? I see that, for example, if my lens is a 85mm 1.8, the aperture on the camera stays at 1.8 and I cannot move it to open it up to 5.6 or whatever in order to have more things in focus.

Is there anything I can do to change this?
 
I use novoflex for `all nikons' which has an aperture ring and I can move the aperture. Nikon G and manual lenses have manual aperture on them and you can change the aperture on the lense itself. Which nikon lenses are you using?
 
On nikon lenses with aperture rings, you have to have the iris stopped down all the way on the lens to use the an adapter to control the iris. The newer G/DX lenses with out aperture rings are stopped down by default and you use the adapter to open them up.
 
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Does not matter if is Af. Your lense has manual aperture or not? If it has you can change it on the lense if it does not have then the only way is to do it from the ring on adapter but there is no way to know at what aperture you are at as the lense does not communicate with the cam. You have to do it by the eye. If you do not see the exposure changing then something is wrong.
 
If you are using a "G" type Nikon lens, your adaptor has to have the aperture control built in. My Novoflex has this feature. If your adapter does not have this feature, you can only use the "older" lenses with built-in aperture control (or get a new adaptor).
 
Oliver Rush said:
On nikon lenses with aperture rings, you have to have the iris stopped down all the way on the lens to use the an adapter to control the iris. The newer G/DX lenses with out aperture rings are stopped down by default and you use the adapter to open them up.
Click to expand...

How do I stop down the Iris all the way? Is that what the metal thing sticking out is for?
 
owaltec said:
How do I stop down the Iris all the way? Is that what the metal thing sticking out is for?
Click to expand...
You have to set the aperture ring on the lens to the smallest aperture (the largest number, ie: 22) and the the iris control on the adapter can open it up.
 
I bought the Adaptimax and returned it.
I've got a cheapo, but I'd heartily recommend Novoflex in a heartbeat.
So far I've been shooting with only my voigtlander so I haven't seriously
tested my cheapo adaptor. Even so I have very light lens - a 50mm f/1.8
and an 85mm f/1.4. Thow on rails and a mattebox, they might just be snug!
By the way, guys how do you add signatures to your posts?
I looked through the profile didn't see anything.
 
I have no problem adjusting the iris on my Nikon lenses with the Novoflex, but I can't determine the f-stop.
 
TeddyJ said:
I have no problem adjusting the iris on my Nikon lenses with the Novoflex, but I can't determine the f-stop.
Click to expand...

That is why I normally use the apature ring on the lens unless the lens does not have one... while you can use the adapter to control the iris on all nikon lenses, it is usually quicker and easier to just do it on the lens, and you get to know exactly what aperture you are using.
 
Oliver Rush said:
That is why I normally use the apature ring on the lens unless the lens does not have one... while you can use the adapter to control the iris on all nikon lenses, it is usually quicker and easier to just do it on the lens, and you get to know exactly what aperture you are using.
Click to expand...
True, but it's noisy and the exposure jumps from f-stop to f-stop. Also, some of my favorite lenses don't have an aperture ring: specifically the Tokina 12-24mm f/4.0. Using the iris ring on the Novoflex is silent and the exposure change is so smooth and almost imperceptible, that it can be used while filming.
I fashioned a tape with approximate f-stops to the Novoflex, but it's not exact. Wish there was a better solution. I'm hoping someone has a better idea.
 
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