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04-08-2008, 10:12 AM   #16
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QuoteOriginally posted by egordon99 Quote
If the Sigma has true ring-HSM it will be well worth the extra $100 (assuming the optics are up to par).
It's definitely ring-HSM. From reports on other mounts, it's very quiet and it won't work w/ screw drive Pentax bodies (pre-K10D).

No IS/SR/VC/VR for you though, so you'll be stuck w/ an IS lens on a Canon body which still isn't bad since you can get a 70-200/2.8IS for around $1200 on craigslist last time I saw one.

The Sigma is also definitely not as sharp wide open as closed one stop. I was hoping the Tamron would be sharp wide open (the Nikon 70-200/2.8 is sharp wide open...it's almost like a macro zoom lens from images I've seen :-)

04-08-2008, 10:16 AM   #17
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I figured as much re. the Sigma HSM. I have the 10-20 and 30mm f/1.4 HSM for Canon, and they are very quiet and fast.

For Canon, I settled on the 70-200mm f/4 IS and am very happy with it. Most of my indoor work is with flash, I don't shoot any sports, and I have two fast primes when I speed. And the f/4 is about half the weight of the f/2.8
04-08-2008, 11:34 AM   #18
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The 70-200/4 should be an L lens from what I've read...extremely sharp wide open (sharper than Canon's 70-200/2.8 stopped down one).
Wish Sigma would upgrade the Pentax 10-20 w/ HSM but that wouldn't make sense until Pentax gets rid of the screw drive motor (which I hope they won't do so we can still use older lenses :-)
04-08-2008, 08:27 PM   #19
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Not complaining at all !! I definitely need a lens like this but now I will have 3 to choose from and compare, as they will all be pretty close in price! Now it will be all about IQ at 2.8 !!

Tim

04-09-2008, 01:53 PM   #20
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QuoteOriginally posted by touchmyichi Quote
How was he one of the first people to end up with that lens?
Because Life isn't fair.
04-10-2008, 11:20 AM   #21
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The 2nd Canon user has put up some street photos that look promising:
Street test: Canon SLR Lens Talk Forum: Digital Photography Review

Another user put up some photos from this on a 5D:
Canon Board - View Single Post - [test] TAMRON 70-200 2.8 Di LD Macro
Seems a bit soft IMHO.
04-10-2008, 01:32 PM   #22
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images do seem soft,

could it be the lack of the "L" and the "IS"


but i do like these ! low light handheld shots
Low light test: Canon SLR Lens Talk Forum: Digital Photography Review
04-17-2008, 12:00 PM   #23
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The bokeh is definitely nice...another sample pic from a different Canon owner:
Tamron SP AF70-200mm F 2.8 Di LD (IF) MACRO photos: Canon SLR Lens Talk Forum: Digital Photography Review

And has some CA:
Re: Owner of 70-200 F4(IS) - AF Speed and reason for purchase: Canon SLR Lens Talk Forum: Digital Photography Review

No surprise, but the Canon USM ring motor lenses focus faster than the Tamron screw drive...

04-17-2008, 12:28 PM   #24
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QuoteOriginally posted by egordon99 Quote
If the Sigma has true ring-HSM it will be well worth the extra $100 (assuming the optics are up to par). I had/have high hopes for the Tamron 70-200mm, but that was (1)Before Sigma announced the 70-200 with HSM for Pentax and (2)I switched to Canon where none of these lenses are stabilized

So if/when Sigma gets it's act together and releases the 70-200mm HSM for Pentax, it will be a GREAT deal on a stabilized 70-200mm f/2.8. Interesting to see how Sigma's HSM performs compared to Pentax's current micromotor SDM implementation (which I found lacking compared to Canon's USM) For comparison, the Canon 70-200mm f/2.8 IS runs about $1600, so the $800 Sigma would be an absolute freakin' bargain!
Why did you switch to canon?
04-17-2008, 12:45 PM   #25
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I tested this lens a few days ago on a canon rebel xti at a local camera shop (they had no pentax mounts) its a nice lens though. a bit on the heavy side (i like that) I don't really like the AF/MF clutch on the lens. AF is rather fast but I cant really say much on that since it wasn't mounted to a pentax body. the fit and finish is very nice, but its way too expensive for my tastes. great lens overall though and you cant beat the 2.8 constant, that is a real plus. sure beats my 70-210 4 thats for sure.
04-17-2008, 12:56 PM   #26
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04-17-2008, 07:22 PM   #27
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Finally some outside pics from Battery Canon Guy:
OBROBIONE
The bokeh is really smooth on the Tamron.

séamuis: in the Pentax ecosystem, the Tamron is the cheapest in the 70-200/2.8 range, believe it or not. Short of paying $2K for an FA*80-200/2.8, I don't think you can do better (although the Sigma 70-200/2.8 HSM might be better since we haven't had a head to head comparison yet)
04-28-2008, 03:37 PM   #28
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a few more new photos from a different Canon owner:
Tamron SP AF70-200mm F 2.8 new photos...: Canon SLR Lens Talk Forum: Digital Photography Review
06-16-2008, 01:23 PM   #29
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Unfortunately, the DPR review is a bit disappointing :-P
Tamron SP AF 70-200mm Di LD (IF) Macro Lens Review: 1. Introduction: Digital Photography Review

While the lens is certainly capable of great optical performance on par w/ Canon's 70-200/2.8, it's got an imprecise focusing motor/mechanism so shots are not consistently in focus. That explains why some of the samples we've seen are great and others are so so :-P
06-16-2008, 02:21 PM   #30
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No the DPR review indicates that the Canon has problems focusing, 3rd party lenses are always having troubles with Canon, as the Pentax focusing mechanism is different, I think it is premature to condemn this lens, especially based upon the image quality.

QuoteOriginally posted by kenyee Quote
Unfortunately, the DPR review is a bit disappointing :-P
Tamron SP AF 70-200mm Di LD (IF) Macro Lens Review: 1. Introduction: Digital Photography Review

While the lens is certainly capable of great optical performance on par w/ Canon's 70-200/2.8, it's got an imprecise focusing motor/mechanism so shots are not consistently in focus. That explains why some of the samples we've seen are great and others are so so :-P
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