gratchie wrote in post #14639071
I think he's looking forward to buying a FF at some point so he'd like to invest on a EF mount instead
This is true. I do not wish to buy the same or similar lens twice, even if I can sell the used one. I would prefer to just use what I purchased and not have to worry about how much I get back when selling if I can just get an appropriate lens in the first place. I'd like to upgrade at some point, but have pretty much decided that the 70-200 II will come first.
amfoto1 wrote in post #14639093
I like and use the Canon 24-70 (V1) on both crop cameras and full frame.
To me it's a very useful range of focal lengths on crop, though I realize it's not everyone's cup of tea. I complement mine with an ultrawide (Tokina 12-24/4... though IMO the Canon EF-S 10-22 would be fine, too).
I don't need image stabilization on this lens. IMO it's just not nearly as important as it is on longer teles, based upon ten + years using various IS lenses. Sure, if it had it and it didn't add to the cost, I'd take it. But for me stabilization just is not a priority item or key feature on lenses under 100mm focal length.
I haven't tried the Tamron, so can't really compare. It might be a fine lens. My main concern would be focus speed, which is near instantaneous on the Canon. Tamron lenses traditionally have not been very quick focusing, but some of their lenses are now coming with "USD" focus drive, which sounds to be similar to Canon USM. It appears this Tamron uses this new drive system.
In looking at the specs, I did see this "USD (Ultrasonic Silent Drive) powers a speedy AF drive together with continuous manual focus control (Full-Time Manual/FTM)" In reading the few reviews so far, it seems that it is still a bit slower than the canon, but not by much. My kit lens takes a year to focus when I compare it to my 85mm, but if the new lens is any faster than the kit lens, I'll be ok with that. As far as size, i don't have an arsenal of filters or hoods, so I really don't care about size, or weight for that matter. as long as it fits the camera, and will fit in a pack, that is all I am concerned with.
rick_reno wrote in post #14639022
i'm not convinced IS is useful on a 24-70 lens anyway. Look thru your shots, are most around 70mm (Tamron)? or 20mm(Canon)?
In seeing what I have taken so far, the vast majority are from 35 on up. I was originally going to just purchase a 50mm 1.4 but realized when walking around with people, sometimes you have no movement available and you have to let the camera try and do the work that your feet cannot.
One other question I hadn't thought of... Will the 1.4 extender work with non Canon lenses, or do you need a zoom ring specific to the lens you are purchasing? This may make the difference to me between buying the V1 Canon and the Tamron.