28-70 vs 24-70?

I was just curious what the big difference was between these two. I know the 24-70 is the updated version of the 28-70, but I also see alot of people wanting the 28-70 over the 24-70. Can anyone clue me in on the real differences between these two????

Check here...

Here's a good comparison:

http://www.luminous-landscape.com …lenses/24-70-review.shtml

I think it's mostly due to price. Very similar lens, lower price.

I also read somewhere that the 28-70 seems to have better flare control at 28mm than the 24-70 at 24mm on FF... I forgot where I read them.

I was checking out the 28-70 for a while too but thought the 28mm may not be as wide on 1.6x

The 24-70 is wider on the short end, of course. The 24-70 is also a bit sharper than the 28-70. The Luminous Landscape page has more detail about the differences.

However, the 28-70 is usually priced well below the 24-70 and that could be a strong attraction for some folks.

Thanks for the fast replies. The 4mm on a FF isn't going to bust my gut, because I'm picking up a 16-35 II anyway. I'm getting a 50 1.4 for low light, and now just in need of a general purpose lens. The easy choice would've been the 17-55, but alas, the sacrifice for the 5D was made. Can't decide between the 24-70, 28-70, or a 3rd party lens, but I haven't heard too many good things about using non-L glass on a 5D.

How about Sigma 28-70 or 24-70 all of them f2.8? Apparently nice counterpart to the L samples and 3 times cheaper. I am thinking of buying 24-70 EX too.

Do they work on FF?

Yes, these lenses are not DC series, which is supposed to be designed for crop factor cameras.

Sounds good to me, I'll have to look into them. I owned the Sigma 30EX and was completely satisfied.

Sounds pretty good to me too, at f&m is quite good rated (24-70), biggest minus is no HSM, so autofocusing is bit louder, which I don't really care for, and 82mm filter thread, which I too, don't care for as I don't use filters on my portrait lenses 30EX is something on my list too

the sigma and tamron versions are good optically, but the AF is awful. In low light theres no comparison

I recently bought a Sigma 24-70 and have nothing but praise for it. IQ is great and it's a joy to use. These are from a 20D:

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Nice shots!

I'm curious if the Tamron 28-75 IF is also a decent choice for FF, because I don't want a lens that runs into my 16-35 MKII too much.

I believe photozone reported that their copy of the Canon 28-70 had better resolution than their 24-70. But I believe luminous landscape found the opposite - so I think both lenses are very good.

Some people prefer Tamy over Siggy, and vice versa. I personally find Sigma EX build quality very good.