@alcomposer Thanks for the evaluation of the Tokina 28-80mm f2.8, I added it to the list on page 1 of this thread. With Tokina zooms, the focus ring rotation is determined by the type of lens mount - so Nikon F-mount lenses rotate in the Nikon direction, and Canon EF-mount lenses rotate in the Canon/Lumix direction.
Fixed... Got a bit too overexcited... Really nice lens...Will be using this lens in the theatre for sure.
Well, if it's Nikon, focus is the other way 'round.
Ok... I just received the Tokina ATX-Pro 28-80mm 2.8 Nikon Mount lens:
http://lensbuyersguide.com/en/lens/show/Tokina/AF28-80mm_f2.8_AT-X_PRO
Hi People... Just ordered: Tokina ATX-PRO 28-80mm 2.8 Aspherical Nikon mount
(Will report back here- purchased for zoom work - should be par focal... and for low light theatre work) Fingers crossed!
astraban, thanks a lot for your response clarifying this. I really appreciate it. Now can purchase one being more confident about it.
@willianaleman Not all the lenses listed have autofocus in the first place. For those that have it working on the GH2, it's because there is adapters with electric contacts (4/3 to m4/3) from panasonic & olympus - even cheap chinese one, cf. http://www.personal-view.com/talks/discussion/1612
GH2 Lenses with Adapter and Auto Focus?
It has been mentioned on this topic that all the lenses listed by DPowell work with auto-focus. However, all these lenses with the exception of the Panasonic, require adapters. How is it possible that a lens requiring an adapter can work GH2 in auto-focus? Could you clarify this for me. I'm really confused about. Thanks
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I recall the Tokina ATX Pro 28-70/2.6-2.8 is basically the same lens as the Angenieux AF 28-70/2.6-2.8 that only came in Nikon mount. I have the Angenieux 35-70 and 70-210 zooms in FD mount. A few years ago, they were very cheap, until collectors drive their prices up unfortunately.
Got hold of the 4/3 Olympus 14-35mm, its a really, really amazing lens. Yes, the iris flicker is a drawback, but I do not zoom around anyways. (Thanks for the info about 2.8, did not recognize that!) Focus breathing is very low and even at 14 mm you can get your subject devided from background which is gently and elegantly blurred. Well, you know the specs from above.
Now on the two real drawbacks:
This lens is huge and very heavy. You don´t believe it until you hold it in your hand, this thing is like a brick. The cheap MFT mount plus the adapter add quite some play, so don´t even think about using this lense with a FF without an additional mounting point in the front. You could try to focus by hand, but due to the play you will as well easily add shaking to the picture. Sadly there is no matching lens support from Olympus available, at least none that encircles the lense completly and keeps it tight in position. So you will either need to buy one of those.. http://store.zacuto.com/studio-19mm-locking-lens-support.html .. of get one crafted as we did. Now this thing gets into the way if you want to use another, shorter lens, so you have slide of mattebox to get it out of the way on lens change... well, you get the point.
The second drawback is the amount you need to rotate the focus ring to get from closest to infinite. While on many foto lenses the way is much to short, on the 14-35 it is really a bit to long. So you need 1.5 full turns on FF to get from closest to infinite. This can not be done with one hand. Might get a bigger gear wheel for the FF, but you still you run into problems if you want to do fast move from something far away to something really close.
Beside these drawbacks I would really recommend this lens. Its a working horse indeed!
Yes I was talking about the m4/3s lens. I didn't realize that the 4/3s version was the one we were talking about. I sure wish the m4/3s lens didn't do it.
@mpgxsvcd Perhaps you're thinking of the Micro 4/3rds version of the Panasonic 25mm f1.4? My copy of the legacy Four Thirds 25mm f1.4 has virtually no visible focus breathing.
The first post says that the 25mm does not focus breathe. It is actually almost as bad as the 20mm for focus breathing. It is really quiet though.
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