timpy Posted July 6, 2017 Share Posted July 6, 2017 Hey there forum, I have an "old" Tokina zoom in sight, the 28-70 2.6-2.8. It is supposed to be a very good lens for video. I want to use it for my compact configuration: a7rII handheld with a smart lens adapter. As you know, the IBIS needs to know which focal length you are at in order to work properly. With native sony zooms or even adapted modern canon zooms that goes automatic into the camera and all works fine. But what happens with a Legacy zoom lens like the Tokina? This lens is about 15 years old and has rear contacts, but I don´t know if that means it communicates focal length with the camera. Has someone experience with a similar zoom lens? Thanks in advance, Javi. Link to comment Share on other sites More sharing options...
aldolega Posted July 7, 2017 Share Posted July 7, 2017 You say it has rear contacts so I would assume it's an EF mount. If so it should work exactly the same as a newer EF lens. Link to comment Share on other sites More sharing options...
timpy Posted July 10, 2017 Author Share Posted July 10, 2017 Thanks for repying aldolega. Yes, it is EF. It is this lens here:http://www.ebay.com/itm/Tokina-AT-X-PRO-AF-28-70mm-f-2-8-Lens-for-Canon-EOS-EF-Excellent-from-Japan-/263079776036?hash=item3d40c6cf24:g:~cQAAOSwqW9ZYjd6 When you say it works like an modern EF lens, do you also mean it regarding the focal length information transmited to the camera / adapder? Link to comment Share on other sites More sharing options...
aldolega Posted July 10, 2017 Share Posted July 10, 2017 I don't know one way or the other, about that lens specifically. But if it's EF and has contacts, and can autofocus and change aperture on Canon bodies, I see no reason why it wouldn't work on the A7rII and Metabones. Link to comment Share on other sites More sharing options...
timpy Posted July 11, 2017 Author Share Posted July 11, 2017 Yeah, I'm also pretty sure it will work regarding autofocus and aperture control, but what is also important for me here is the focal length info, because the IBIS works based on this. If it's not transmitted to the camera, this lens cannot be used with IBIS. Link to comment Share on other sites More sharing options...
aldolega Posted July 12, 2017 Share Posted July 12, 2017 Sure it can, you'd just have to enter the focal length manually in the camera menu. A pain in the ass if you change FL often, but it would work. I would do some googling to see if photos shot with the EF version of the lens have the focal length included in the EXIF data. If so, you should be golden, as that means the lens is communicating FL to the body in at least that manner. Link to comment Share on other sites More sharing options...
timpy Posted July 12, 2017 Author Share Posted July 12, 2017 Thanks aldolega, I´ll look for those EXIF infos on the web. As you mentioned, it is a Pain in the ass to enter the FL manually! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now