Gear Talk > Third Party Manufacturers
Tamron introduces 24-70mm f/2.8 with IS
Pixel Nut:
;D I just purchased the Tamron 24-70mm f/2.8 with a Canon mount today. It is sharper than my 24-105 which is sharper than every Canon 24-70 f2.8 series one I have tried. It is just a fraction sharper than my 17-55 f2.8. Unlike my Tamaron 17-50mm f2.8 VC, the autofocus is fast and the color is great. With f2.8 and IS it is the best of both worlds. It will join my Canon 70-200 f2.8L II in my camera bag. I purchased this lens for $1289.00. This price will probably go up. C'mon Canon, can you give us IS?
Marsu42:
--- Quote from: Pixel Nut on May 04, 2012, 11:30:24 PM ---It is sharper than my 24-105 which is sharper than every Canon 24-70 f2.8 series one I have tried.
--- End quote ---
Then you won the Tamron lottery, because every review I read says it's at most on par with the 24-105 @f4 and has problems on the long end.
I got hold of a Tamron 24-70 in a store today and compared it with some test shots to their 24-105L and the 35L. First off, the rumors seem to be true - there is a larger production variance with Tamron, because it had a healthy frontfocus that is uncorrectable on my 60d. But I could compare the lenses at the zone where the af ended up. If I ever should get the Tamron, its probably best to buy five lenses, test them and return four.
The iq of this Tamron copy was a big letdown, at f2.8 its very underwhelming (even on crop!), and nearing the 24-105 at f4. The 35L in comparison is a class of its own and knocks your socks right off, it's as sharp at f1.8 as the Tamron at f4. VC seems to be ok, but really, at ok indoor lighting and open aperture its "nice to have" but hardly essential - the shake at these focal lengths is very low anyway, except if you're shooting video or handheld hdr. The Tamron af is noticeably slower than the 24-105, but faster than the 35L - someone please try servo af and lots of consecutive shots and tell if the Tamron is precise.
Since the 24-70vc & 24-105L cost about the same, the f2.8 of this particular copy is for small print only or emergency use, esp. in combination with the vc. And you trade it for longer zoom range and better af. I hope lots of 5d3 owners sell their "crappy" kit 24-105L lenses and they end up with people who can appreciate them. But I'll try another 24-70 when I stumble upon it - maybe I just was very unlucky and end up as a Tamron user after all.
Pixel Nut:
8)Apparently, I was not the only luck winner. Go to:
http://www.bhphotovideo.com/c/product/845339-REG/Tamron_SP_24_70mm_f_2_8_DI.html
http://www.ephotozine.com/article/tamron-sp-24-70mm-f-2-8-vc-usd-lens-review-19056
and read other reviews. It may be a fluk considering that I had some minor issues with my Tamaron 17-50mm f/2.8, which was traded for it's Canon counterpart. However, if it's a Lottery prize, I graciously accept the win. Oh, in case you haven't noticed; the Canon 24-70mm f/2.8 mk1 is going for $799.99 from some dealers. There is also a rumor that the Canon 24-70mm f/2.8 mkII may sell for $1799.00-$1899.00. Hmm, I wonder why? Don't be so loyal to the red ring that you lose control of your wallet. P.S The 135mm f/2 is still the sharpest lens in the Canon inventory...oops, maybe I won that lottery too. ;)
I am going to try to attach a photo that was taken, handheld at night, with the Tamron 24-70mm @ f/2.8 ISO 400 Shutter Speed 1/4 sec
Tammy:
--- Quote from: dilbert on April 26, 2012, 06:12:44 AM ---
--- Quote from: eirikv on April 24, 2012, 02:44:41 AM ---A review of this lens:
http://www.ephotozine.com/article/tamron-sp-24-70mm-f-2-8-vc-usd-lens-review-19056
--- End quote ---
The graphs look pretty normal - peak in lens resolution at somewhere around f/5.6 to f/8.0. For a landscape shot, at f/8 or f/11, it's going to be pretty damn good.
Interestingly, even though the center peaks at 8.0, it is also at around this point when the entire image is of similar resolution - exactly what you want and need for a good landscape shot.
To read the graph in a different manner, if you're shooting portrait at 2.8, looking for nice bokeh with your subject centered then the drop off in resolution towards the edge is not going to harm the picture at all.
--- End quote ---
look at the graphs for the Canon 24-70 mark I at F/2.8 in another tab/window.
Mt Spokane Photography:
--- Quote from: eirikv on April 24, 2012, 02:44:41 AM ---A review of this lens:
http://www.ephotozine.com/article/tamron-sp-24-70mm-f-2-8-vc-usd-lens-review-19056
Here is a more realistic review with reasonable charts.
http://www.photozone.de/canon_eos_ff/741-tamron2470f28eosff?start=1
--- End quote ---
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