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04-15-2007, 12:54 PM   #1
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Second Thoughts about going Sigma..

[SIGMA EX50-150mm 1:2.8 APODCHSM] vs [Tokina AT-X PRO 535 SD 50-135 F2.8 DX]



-Sigma Photo from DPR Press Release.
-Tokina Photo from the Tokina Offical Website's Products page.

(I thought the SLR LENS forums were rather lacking of LENS pics of late so here's two. =P.)

Anyhow, there's been recent debate as to the availiability of the Sigma 50-150 for Pentax as we know the K10D can support the supersonic AF motors. This opens up a new debate as these two lenses bare remarkable similiarities as competiting products.

Both weigh about the same amount, use 67mm filter threads and have the same dimensions. (Picture above is 50-150mm in Canon Mount and Tokina 50-135mm in Nikon Mount)

Looking at the new Pentax DA*50-135/2.8 (Equiv to Tokina 50-135), it loses the tripod collar.


(Image from Amazon.com)

There is been discussion about the Sigma 70-200 but more so regarding the Sigma 50-150 as a reasonable competitor/alternative. Through past posts and inquiries by other members here at PentaxForums, Sigma's established and maintained a rather lax attitude when it came to being asked about the 50-150mm lens and others being adopted for Pentax's supersonic AF capabilities.


I just came across some lengthy and interesting activity over at Nikonian forums as they have access to both the Sigma 50-150mm and the Tokina 50-135mm and they have put up some comparison tests.

1 - Sigma vs. Tokina Lens Test

The Original Thread : Discussion Forums @ Nikonians - My Samples: Sigma 50-150 vs.Tokina 50-135. MORE PICS.

2 - Sigma 50-150/2.8 vs. Tokina 50-135/2.8: Canon SLR Lens Talk Forum: Digital Photography Review

I'll let you check the details yourselves, but perhaps Sigma's lack of interest is for our sakes, a point in the right direction...


Last edited by FotoPete; 04-15-2007 at 09:12 PM.
04-15-2007, 01:49 PM   #2
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In almost every case, the main con people list for the Tokina is lack of in lens AF. Otherwise, it appears to be a superior lens.

We get SDM, weather sealing, and I personally have no use for a tripod collar. Score one for Pentax...
04-15-2007, 02:06 PM   #3
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Wow! That test gives me some more faith back in Pentax Zoom designs. But still, at $1200 here in Alberta, Im hoping the price will fall.

But god, if the Tokina could smoke the Siggy that much, image how much better it will look with true SMC coatings?
04-15-2007, 03:26 PM   #4
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How Much Better?

QuoteOriginally posted by scribble Quote
Wow! That test gives me some more faith back in Pentax Zoom designs. But still, at $1200 here in Alberta, Im hoping the price will fall.

But god, if the Tokina could smoke the Siggy that much, image how much better it will look with true SMC coatings?
It will have better colour rendition less CA and will focus faster. How is that for a start?

Ben

04-15-2007, 04:23 PM   #5
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I tried to post earlier but apparently it needs to be moderated? Odd...

Anyway, the SDM and weather sealing are the biggies for me. I dont use a tripod much either.
04-15-2007, 06:59 PM   #6
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QuoteOriginally posted by option Quote
I tried to post earlier but apparently it needs to be moderated? Odd...

Anyway, the SDM and weather sealing are the biggies for me. I dont use a tripod much either.
Will the DA* 50-135 on a K100D or K10D on a tripod be bad? Will there be an accessory detachable tripod collar?
04-15-2007, 07:54 PM   #7
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Well, theres like a stand you can buy that helps support a long telephoto lens...but looking at the design of the DA* 50-135, theres not much room.

I guess you'll just have to hand hold it. Yea its going to be a pain at 765g with the hood...especially for those with the K10D + grip.
04-15-2007, 08:38 PM   #8
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Looks great! Definitely want the 50-135 MORE now!

I don't think it'll be too bad to hold. BUT they've done the same bloody thing as the 16-45 - bunched up the focal lengths @ telephoto end.

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