January 5, 2015 at 7:14AM

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Tamron 24-70 f2.8 VC vs Canon 24-70 f2.8 ii

Hey everyone. I shoot mostly narrative shorts and I'm looking to buy an ef mount 24-70 f2.8 zoom to put on my gh4 w/ a speed booster, but which one?! I hear great things about the tamron 24-70 f2.8 VC, but I'm really worried about focus breathing and might get the canon 24-70 f2.8 ii instead. Do any of you have the tamron or another 24-70 f2.8 and can tell me their experience with it?

Thanks in advance.

8 Comments

I recently bought the Tamron, because it has Image Stabilisation (they call it VC). I've read that the Canon lens is a tad sharper, but it isn't noticable when using it for video.

What do you mean by focus breathing?

January 6, 2015 at 10:56AM

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I recently bought the Tamron, because it has Image Stabilisation (they call it VC). I've read that the Canon lens is a tad sharper, but it isn't noticable when using it for video.

What do you mean by focus breathing?

January 6, 2015 at 2:22PM

23
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Focus breathing refers to the shifting of angle of view of a lens when changing the focus. When focusing on something near to far for example, the image seems to shift slightly.

Cinema lenses tend not to do this as the effect can be distracting but many photography lenses do because they weren't designed for video.

January 6, 2015 at 5:47PM

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Scenes
Shooter / Cutter
110

Thanks for explaining!

Jelle Klokman

January 12, 2015 at 4:07AM, Edited January 12, 4:07AM

Both of these lenses will show some serious breathing when rack focusing. The good thing is, no one except you and maybe another cinematographer will know what it is or care that it is there. If you really hate it, I've seen a tutorial where they just use warp stabilizer to take it out. I am an owner of the 24-70 mark II, and think it's great and far superior to the first version, which I also own. Can't speak to the Tamron version. I might be incorrect in saying this and, I apologize if I am, but the benefits of Image stabilization might be best realized in photo mode during low light exposure. This is because you can use longer shutter speeds without motion blur from your holding the camera. Not sure how much effect it has for shooting video, but I generally turn IS off on my 70-200 while panning.

January 8, 2015 at 4:22PM

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Derek Olson
Directomatographeditor
674

A word of advice, be careful with third party lenses when using speedboosters. I bought a Tamron 90mm Macro VC and should use it with my speedbooster for my Sony FS700. The only problem is that it doesnt work :P If your lucky sometimes the stabilization works but then you can't change apperture.
So I stick to Canon lenses when ever possible from now on, could of course be a bad sample of the speedbooster I got....

January 10, 2015 at 12:38AM

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Robin Pagmar
Art Director, Director of Photography
98

I have canon and are very good.They are prepare for full frame.

January 20, 2015 at 4:20AM

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Ragüel Cremades
Film producer and director
8682

The Canon is top notch in terms of sharpness and lack of CA. I've used the Tameron and while it's fine for most users, it drives me absolutely nuts that the zoom and focus rings are in the opposite spots of that of the canons, it that influences your decisions at all. I imagine they both have focus breathing, but it's going to be hard to avoid that with any lens in this price range. Plus I don't think 99% of people notice it anyway.

March 9, 2016 at 9:11PM

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