canderanet
Active member
Hi! I'm looking for 70-200mm lens for indoor and outdoor shot, and I'm a k10d user. Could you guys tell me which one is better between SIGMA 70-200mm f/2.8 EX DG HSM Macro II and Tamron 70-200mm f/2.8?
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Best 70-200mm f/2.8 for PENTAX
- Thread starter canderanet
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Depends on your shooting style.
For some the Tamron probably has the edge being fractionally sharper at 200mm
For sport the Sigma is better with the hsm ficusing allowing credible AF-c use.
For portraiture/wedding the Sigma has the advantage being essentially silent when focusing.
The Sigma has quick shift Focus the Tamron doesn't.
The k10d is known to have focusing issues with SDM/HSM lenses.
If your planning on keeping the k10d I'd go with the Tamron, Unless you can try a sigma to ensure AF is accurate on you body or you know your SDM calibration is fine (you own other SDM glass).
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bladerunneruk
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??? where is the evidence supporting this statement please ?
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bladerunneruk
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3rd option for you to consider... Pentax DA*60-250/4, it's a brilliant lens for landscape photography. I use it on a K10D. it's approx 350g lighter than the sigma, 60mm vs 70mm will be helpful indoors, on the -ve side it's more £££
have a look at dofmaster to see how narrow the DoF is at 2.8 then think about how usable a 70-200/2.8 is for your style.
just my 2d worth
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Jerome the Parisian
Forum Enthusiast
Evdences are in the DPR lenses review
The 60-250 is not a f/2.8 lens as mentioned in the OP
The 60-250 is not a f/2.8 lens as mentioned in the OP
As stated above review sites often mention this issue.
A quick search for bf/ff issues will reveal that the highest percentage comes from k10d owners with the SDM lenses.
This is IMO because SDM was not ready when the camera was released but was enabled in a later firmware therfore no k10d's were ever calibrated for SDM at production.
My K10d sensor was 170um out for SDM across all my lenses (2 at the time)
Wheras screw drive ranged from 10-20um out.
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D TONG
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The FA* zoom is likely the best closely followed by the discontinued non-macro Sigma non HSM 70-200mm
Daniel, Toronto
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eruditass
Veteran Member
http://www . pentaxforums.com/forums/pentax-slr-lens-discussion/80237-tammy-70-200-versus-sigma-70-200-a.html
Interesting read my only thought would be
If the Tamron has better contrast than the Sigma why does it hunt more in low light .??
The two statements are diametrically opposed you cant have lower contrast but better AF stability.
Phase sensitivity is directly related to contrast.
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Russell Evans
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Maybe more accurate AF calculations are possible with HSM? I remember this being stated about the DA 55mm when it came out. The run end to end of the SDM AF was slower than the end to end run of the screw driven FA 50mm f1.4, but people thought it focused faster as the 55mm didn't do the triple stop focus adjustment of the FA 50mm. The DA 55mm was said to simply just go to the spot needed for focus and stop.
Anyway that's the only reason I could come up with.
Thank you
Russell
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I thought about that as well but as far as hunting goes I don't think it can apply.
Might stop the over run correction which folks here like to call Pentaxes increased accuracy. ;-) (the double take AF lock screw drive is famous for).
But hunting is
is maximum phase reached not adjust is maximum phase reached no adjust ad infinitum.
If contrast is low (ie. edges not sharp in our terms) then hunting will ensue.
I think the DA*55 is a target lockon monster due to long throw and high contrast, not specifically SDM.
Yep I'd agree that its the only one I can think that may have some mileage.
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Depth of field is dependent on subject distance. If you're shooting events, concerts or sports (typical 70-200mm usage), it's normal to have a subject distance of 10m or more. At 10m, the DoF for 200mm and f/2.8 is around 30cm, which is more than usable!
UtahManSir
Veteran Member
I can only comment on the Sigma on a K200d, havn't tried the Tammy. (Rented from http://www.cameralensrentals.com they have both lenses for rent too, FYI!)
My copy of the Sigma was soft at 2.8, better at 3.5, but not really sharp till f4. I ended up shooting my friends concert at f4 and 800ISO, and had some issues with motion blur that I had hoped to avoid.
On the plus side the HSM is VERY quiet and seemed to be accurate on my K200d. It is a big heavy bugger and holds quite steady as well.
I enjoyed the lens but wasn't converted to buying it.
AFter using it for a week and a concert, I have side stepped to looking at the Pentax 60-250 and Sigma 100-300 to meet my tele needs. Or possibly even the Bigma.
Lloyd
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My copy of the Sigma was soft at 2.8, better at 3.5, but not really sharp till f4. I ended up shooting my friends concert at f4 and 800ISO, and had some issues with motion blur that I had hoped to avoid.
On the plus side the HSM is VERY quiet and seemed to be accurate on my K200d. It is a big heavy bugger and holds quite steady as well.
I enjoyed the lens but wasn't converted to buying it.
AFter using it for a week and a concert, I have side stepped to looking at the Pentax 60-250 and Sigma 100-300 to meet my tele needs. Or possibly even the Bigma.
Lloyd
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eruditass
Veteran Member
The pre MACRO versions of the Sigma and Tamron are all supposed to be quite sharp at 2.8, but of course don't have HSM.
areidjr
Veteran Member
I have the Sigma 70-200 1:2.8 HSM II Macro and it's incredible sharp @ f/2.8 over the entire zoom range. Unfortunately, it's currently out for repair due to a failed focus motor.
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moving_comfort
Veteran Member
.
Sigma focuses faster, tamron is sharper, at least at 200mm f/3.5 and greater.
I used to own the Tamron. Some shots & thoughts:
here ---> http://forums.dpreview.com/forums/readflat.asp?forum=1036&message=29643348
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Here's my little guy going on safari last fall:
DDoram
Veteran Member
I have the Tamron 70-200 f2.8 and it is an excellent performer; very sharp and love the macro capability. Since I haven't used the Sigma I can't comment on the difference between the two. I also have the Pentax 60-250 and use it more for travel since it lighter and smaller.
Either lens will be a good choice.
Dale
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Either lens will be a good choice.
Dale
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UtahManSir
Veteran Member
Lucky y ou!! This one did have the light bubbling separation in the front element, that supposedly doesn't effect resolution......
It was better at 70-150 ish but got worse at 200. Darn sample variation.....
Lloyd
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It was better at 70-150 ish but got worse at 200. Darn sample variation.....
Lloyd
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canderanet
Active member
Thanks to moving_comfort! After i saw your pic samples, i made my decision that is picture quality is more needed for me than the speed of lens.
Mark Ransom
Veteran Member
Lighting is everything. I think this would have been a good picture, no matter what lens.
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