[Jewelltrail]

A shot from my recent vacation--the lens just gets more appreciated the more you use it--I think.

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Last edited by Jewelltrail; 09-25-2009 at 09:11 AM.

[jgredline]

I agree J--which polarizer does the trick for you? Thanks.

I have the B+W std poloraizer. The cheap one, not the expensive one. No vignetting on the corners either.

[ndy4eva]

The Sigma 10-20mm f4-5.6 does not have HSM version for Pentax, right? The Sigma's website doesn't really have clear information on it.

Thanks,

[jgredline]

The Sigma 10-20mm f4-5.6 does not have HSM version for Pentax, right? The Sigma's website doesn't really have clear information on it.

Thanks,

I am not completely sold on the HSM or sdm systems and I have most of the DA*LENSES. I see more missed focused shots with the motor driven lenses instead of the screw drive lenses.

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Last edited by jgredline; 06-23-2009 at 07:06 PM.

[kenyee]

The Sigma 10-20mm f4-5.6 does not have HSM version for Pentax, right?

That is correct. Not a big deal if you're using hyperfocal and not even a big deal w/ AF since it focuses pretty fast.
The new 3.5 one might be HSM but we won't know until August...

[Jewelltrail]

Ndy4eva: The Sigma 10-20mm f4-5.6 does not have HSM version for Pentax, right? The Sigma's website doesn't really have clear information on it.

You are correct! And this topic is the source of much confusion for many. Indeed, even Abes of Maines, who sold me my Sigma 10-20 4-5.6 advertized it as HSM for Pentax.

But I agree with Kenyee, it is not a big deal. The lens focuses quickly and accurately for me. Sometimes, to be certain, I'll use the hyperfocal though.

[jgredline]

You are correct! And this topic is the source of much confusion for many. Indeed, even Abes of Maines, who sold me my Sigma 10-20 4-5.6 advertized it as HSM for Pentax.

But I agree with Kenyee, it is not a big deal. The lens focuses quickly and accurately for me. Sometimes, to be certain, I'll use the hyperfocal though.

I almost always use hyperfocal. On this lens it is no problem at all as it has such a short throw.

[Electric Eye]

...I just ordered the 10-20mm last night and cannot wait to get it!.I am a little dissapointed as the lens was advertised as HSM from Abes of Maine and will definitely be in touch with them re:the false advertising thing,but I am sure I will love it regardless!

[ndy4eva]

I just bought one off from forum member. Can't wait to try it out. Any suggestion on reasonable UV and CPL filter for this lens?
Thanks,

[kristoffon]

...I just ordered the 10-20mm last night and cannot wait to get it!.I am a little dissapointed as the lens was advertised as HSM from Abes of Maine and will definitely be in touch with them re:the false advertising thing,but I am sure I will love it regardless!

It's probably just oversight on their part - you'll see sigma lenses listed for pentax as HSM everywhere you look (b&h, adorama...), this one, the bigma, and a few others that have hsm for canon/nikon and not pentax

[jgredline]

If I may make a suggestion to those future owners of this lens. Keep in mind that it is a ''wide'' lens and in order to use it effectively, the idea is to capture as much detail as possible. If I may use Jewelltrail's example above, notice how it is pretty sharp out from about the three to four foot mark and retains that acceptable focus all the way to the back of the house..This lens has great DOF and should be used this way ''IMO''...Forget about bokeh, this is not the lens for this...In its proper use, it is magnificent. Use the distortion it produces at 10mm to 14mm to get creative. Try and keep the lens in the F/8 to F/11 range unless it is getting dark and you need the light. For those family portraits and places where the distortion is not desired, shoot at between 15-20mm. This lens also quite sharp in the center...

[Electric Eye]

If I may make a suggestion to those future owners of this lens. Keep in mind that it is a ''wide'' lens and in order to use it effectively, the idea is to capture as much detail as possible. If I may use Jewelltrail's example above, notice how it is pretty sharp out from about the three to four foot mark and retains that acceptable focus all the way to the back of the house..This lens has great DOF and should be used this way ''IMO''...Forget about bokeh, this is not the lens for this...In its proper use, it is magnificent. Use the distortion it produces at 10mm to 14mm to get creative. Try and keep the lens in the F/8 to F/11 range unless it is getting dark and you need the light. For those family portraits and places where the distortion is not desired, shoot at between 15-20mm. This lens also quite sharp in the center...

...Great feedback on the lens,appreciate it!

[jgredline]

...Great feedback on the lens,appreciate it!

Your welcome!

Somehow this thread's topic has moved from the new (to be released in August) f/3.5 lens to the older f/4-5.6 lens.

I'll be very exciting to see the new one will perform compared to the old one.

[Ben_Edict]

There must be some good reason to update current 10-20mm. I assume better IQ. That's good enough reason to me to sell the f4-5.6 and buy the f3.5.

The good reason (from Sigm's point of view) might also be detrimental to IQ: lowering production cost, by using a "streamlined" manufacturing process or using cheaper material or employing easier (aka cheaper) to make lens curvatures. We simply do not know yet.

Ben