Sony Nex 5N LCD looks very dark relative to other cameras' Live View?

Started Dec 15, 2012 | Questions thread
fotowbert
Senior MemberPosts: 1,273Gear list
Like?
Nikon lens aperture control
In reply to blue_skies, Dec 16, 2012

You can't use the Canon EF lens trick to preserve lens aperture settings on Nikon G lenses.

The aperture mechanism in the Nikon lens is purely mechanical and has a return spring in the lens which tries to keep the aperture closed. When the lens has an aperture ring the blades only close to the f value the ring is set to. The "G" type Nikon lens absence of an aperture ring causes to spring to fully close the aperture once the lens is removed from the body. (The tilt/shift Nikon lens with electric aperture control may behave differently.)

The Nikon body controls the lens aperture by moving the lever on the back of the lens. It holds the lens wide open for viewing and then moves the lever to the shooting aperture position during exposure. To ensure the body has full control of aperture with a lens equipped with aperture ring the body requires the lens to be set at minimum aperture.

The Nikon G to NEX adapters have a ring to allow manual incremental control of the aperture lever on the back of the Nikon lens. This allows aperture control via the adapter but is rather imprecise as f values are not marked. You can get an indication of what each click stop represents by comparing exposure reading.

  • John

blue_skies wrote:

Yes, you need an adapter with aperture control. You can try unscrewing the lens with the camera ON, this may preserve the aperture settings. Also, on some Nikon lenses, manual aperture control was possible by rotating the focus ring past it's extreme point..

http://www.adorama.com/NVNEXNIK.html

-- hide signature --

Cheers,
Henry

 fotowbert's gear list:fotowbert's gear list
Canon PowerShot A20 Canon PowerShot SD870 IS Fujifilm FinePix F31fd Panasonic Lumix DMC-LZ8 Canon PowerShot S95 +15 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow