2

When I look through a viewfinder before I take the photo, the lens is "wide open" - at its largest possible aperture (unless the depth of field preview is used). The aperture is adjusted to whatever I set it to just before the shot.

I understand it this way: the camera tells the lens to adjust the aperture, makes a shot, and resets the aperture back to the max.

But what about manual lenses like, e.g., the Samyang 8mm FishEye f/3.5? It does not have any connection to the camera (in fact, my D5000 shows No lens attached when I mount it). I set the aperture directly on the lens and the camera has no idea about its settings. Still, the viewfinder shows the scene very brightly, even if I set f/22.

How do such lenses know when to adjust the aperture? Am I missing something?

0

1 Answer 1

5

Nikon has a very noticable lever just inside the lens mount on the left side (viewing the body without the lens from the front).

D500 Nikon body aperture lever
Photo source: Nikon D5000 DSLR: Announced and Previewed

On the lens there should be a matching lever. You can move it and see the diaphragm close.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.