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I have the version I.
Version I has 77mm filter threads. I believe version II is 82mm.
Version I is a “reverse zoom” — version II is standard zoom. A “reverse” zoom means that when you see the lens get physically longer, the focal length is actually getting shorter (most lenses do not work this way). This has some advantages when using the hood. Normally you have to make sure the hood is short enough to avoid causing any vignetting. Since the version I is a reverse zoom, when you’re at the 24mm end the objective element is all the way forward (sticking out near the front of the hood). When you zoom to the long 70mm end, it will retract deep inside the4 hood. On the version II (being a standard zoom) the hood is actually rather shallow to avoid vignetting.
The version II does improve the optics. It’s a sharper lens vs the version I and it’s sharper everywhere and at every focal length. While I don’t own the version II, I’ve heard people wax poetic about the improvements to sharpness and boast that it’s not just the best 24-70 for a “Canon” ... but go on to boast that it’s the best 24-70 lens in the industry for *any* camera. I’m not sure if that boast is true, but it is an exceptionally good lens.
Neither version has image stabilization (there is an f/4 version that does include image stabilization).
If I were buying “new” and my budget would allow me to afford either version, I’d go for the II.
I didn’t bother to upgrade my lens to a version II *because* it’s a lens I just don’t use very often. That may sound surprising since this is considered one of the “bread & butter” lenses for most photographers. I find it’s good for typical candid shots. Most of the time, I’m shooting with my 70-200 ... or maybe my 100-400. When I shoot something that calls for a shorter focal length, I have enough specialty lenses that I usually grab one of those lenses instead (such as the 85mm f/1.4L ... or if I’m shooting a landscape I might grab my 24mm tilt-shift, etc.). My 24-70 does get some use ... just not enough to justify shelling out for the new version.
what is the big differents between the Canon 24-70mm 2.8 i and the ii version?
Is differents big? Im not a pro so Its a lot of money.
1/2”!
If you don’t have to have a 2.8, the 24-105 is a lot more versatility, has IS and is a very good lens for a lot less money.
1/2”!
If you don’t have to have a 2.8, the 24-105 is a lot more versatility, has IS and is a very good lens for a lot less money.
I was going suggest this option as well. It is f 4 but as my outside "walking around" lense that is fine and I really like it. For how I use it, it is often at f 8 anyway. But, I understand the need for speed.