[heatherslightbox]

I just got my June issue of Shutterbug magazine and this issue is devoted to PMA. Among the lenses, the Tamron 10-24 is mentioned. Since there is so much interest in it, I thought I'd share some highlights from what I read...

1. It will be faster than the Sigma 10-20/4-5.6. It's aperture range will be f3.5-4.5.
2. "The more versatile, internally-focusing zoom will feature wider apertures, closer focusing, and a more exotic optical formula with a high index/high dispersion glass element, two LD elements, a glass-molded aspherical element plus three hybrid aspherical elements. That combination should effectively correct distortion and all types of aberrations."
3. It will have "superior edge sharpness/brightness plus new multi-layered coatings for maximum flare control."

Still, no release date or price has been announced.

HTH,
Heather

[Snapshot12]

why dont they try to make it constant f4? it will look and sound more exotic,wont it?

i think we are talking at least next year,they r still in the middle of designing it...

[heatherslightbox]

Sigh...perhaps I'd better plan on getting the Sigma 10-20 in the meantime. It's a great lens, except for the fact that it's so slow. I guess as long as I don't go out at night taking WA pics without a tripod, I guess it'll be fine.

Heather

[hll]

fotoritim > TEMMUZ 2007 SAYISI > Geniş Açı Objektif Testi: Sigma 10-20mm f/4-5.6 D EX DC HSM, Tokina 12-24mm f/4 AT-X AF Pro DX, Nikon 12-24mm f/4 G AF-S ED, Nikon 20mm f/2.8 MF AI-S
okey it is turkish but you can analyse the results.
after this test i am stuck.
i understand how effective 2 mms are and notice how bad the sharpness of 10-20 comparing to 12-24

[TomInJax]

fotoritim > TEMMUZ 2007 SAYISI > Geniş Açı Objektif Testi: Sigma 10-20mm f/4-5.6 D EX DC HSM, Tokina 12-24mm f/4 AT-X AF Pro DX, Nikon 12-24mm f/4 G AF-S ED, Nikon 20mm f/2.8 MF AI-S
okey it is turkish but you can analyse the results.
after this test i am stuck.
i understand how effective 2 mms are and notice how bad the sharpness of 10-20 comparing to 12-24

There is a link to the english language version near the top of the page:

fotoritim > Lens Test : Sigma 10-20mm f/4-5.6 D EX DC HSM, Tokina 12-24mm f/4 AT-X AF Pro DX, Nikon 12-24mm f/4 G AF-S ED, Nikon 20mm f/2.8 MF AI-S

Yes, at 12mm the Tokina is a bit sharper (mostly in the corners). But, at 20% wider, the Sigma wide range makes up for a lot of evils in some situations. Also the CAs are much lower with the Sigma compared to the Tokina.

I am still a firm believer in the Sigma. The upcoming Tamron 10-24 sounds great, but depending on the price, performance, and CA it is difficult to tell if it will be a better overall lens. At to wide open speed, a fraction of a stop isn't going to make much difference. If it was an f/2.8 constant aperture, with excellent sharpness and minimal CA - then the price would probably be in the $1000 range - and be worth it!

[axl]

Sigh...perhaps I'd better plan on getting the Sigma 10-20 in the meantime. It's a great lens, except for the fact that it's so slow. I guess as long as I don't go out at night taking WA pics without a tripod, I guess it'll be fine.

Heather

at 10 mm we are talking f4 from sigma against f3.5 from tamron. what is it? 1/3 of stop. At these wide settings I don't think you will notice a big difference in field conditions. Plus, I have to say I practicaly never shoot with 10-20 at f 4 or whatever the fastest stop is at 20mm. It always goes down to 8 or 11, sometimes to f16. In my use the depth of field is what matters, so the 1/3 of stop that Tamron will be faster doesn't mean a thing. The 4mm at the long end, that's another issue. But we don't know yet how this lens will turn up. So in meantime (and I think even afterwards) I'm really pleased with Sigma. For the money, it's one great lens...