Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Lenses
Telephoto
New Nikon 70-200 f4
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="BackdoorArts" data-source="post: 105790" data-attributes="member: 9240"><p>Rick, ideally an nX converter will multiply your aperture and focal length values by a factor of n. So a 70-200 f4 becomes a 140-400mm f8 with the converter. At that value of aperture you're likely to find your AF searching and you'll need to go manual. I have a Kenko Pro 300 2X that I bought a while back and they say that AF will only work on lenses with a Max aperture of 2.8 or brighter. On a whim I just stuck it on both my 50mm & 85mm f1.8 and found that it still would hunt at max aperture in high contrast situations (sunny back yard, deck rail against snowy background - that's contrast). Not sure if the Nikon TC would perform better.</p><p></p><p>Oops, just noticed that the TC is meant for DX cameras. Going to have to try this on the D7000 with the brighter lens.</p></blockquote><p></p>
[QUOTE="BackdoorArts, post: 105790, member: 9240"] Rick, ideally an nX converter will multiply your aperture and focal length values by a factor of n. So a 70-200 f4 becomes a 140-400mm f8 with the converter. At that value of aperture you're likely to find your AF searching and you'll need to go manual. I have a Kenko Pro 300 2X that I bought a while back and they say that AF will only work on lenses with a Max aperture of 2.8 or brighter. On a whim I just stuck it on both my 50mm & 85mm f1.8 and found that it still would hunt at max aperture in high contrast situations (sunny back yard, deck rail against snowy background - that's contrast). Not sure if the Nikon TC would perform better. Oops, just noticed that the TC is meant for DX cameras. Going to have to try this on the D7000 with the brighter lens. [/QUOTE]
Verification
Post reply
Forums
Lenses
Telephoto
New Nikon 70-200 f4
Top