Would taking off the mount on a lens cause the aperture to stop working?

Answer What is the purpose of the pin you took off? Does it push on something that's behind it or complete an electrical circuit that may somehow affect the aperture mechanism?On lots of older lenses ther... Read More »

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How to Choose a Lens Aperture (F Stop)?

One of the most important settings on any adjustable camera is the size of the hole (known as the "aperture") through which light passes on its way from the subject, through the lens, to the film. ... Read More »

What is the value of Mamiya 80 mm 1.9 aperture lens?

I'm not too sure what the 1.9 aperture lens is, but the 2.8 is going for between $500-$10,000 on eBay. You can check it out here: Read More »

Does a nikkor 105mm micro lens has a constant aperture of f2.8?

no that is the wide open aperture. It stops down much smaller.

I need to turn a minolta mount lens to fit a nikon mount?

Can't be done. Even if you could find an adaptor that would let you mount the converted lens, you'd lose the ability to focus to infinity, due to the extra distance from the sensor.You'd be bette... Read More »