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06-02-2011, 05:01 PM   #31
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QuoteOriginally posted by joe.penn Quote
Lowell, can you point me in the right direction of this lens? I can not seem to find it in pentax mount, I can only seem to find it in canon and nikon mount - peep'd ebay, amazon and b&h - love to get my hands on this...
Bought mine in February at B&H corner of 34th and 9th in NYC

Not sure I can give any better directions other than getr off the broadway line at 34th street and walk west.

06-02-2011, 05:39 PM   #32
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Ya, B&H is out of them - you wouldn't happen to have that on a lens clean out sale anytime soon would you?
06-02-2011, 05:45 PM   #33
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QuoteOriginally posted by joe.penn Quote
Ya, B&H is out of them - you wouldn't happen to have that on a lens clean out sale anytime soon would you?
A Lens WHAT???? what do you mean clean out sale???

who ever heard of such a silly idea?

Actually, I have never sold any of my photo kit, which is why today I have 6 bodies, 3 film 3 digital (OK 7 if you count my Mom's nikon FE) and 43 lenses. (how do you say LBA???

Actually Ive been at it 30 years. but have to admit that I have M42 lenses from 24-200 (13 in total) and K mounts (including the samyang 8, 14 and 85) from 8mm to 400mm, plus new AF zooms like sigma 70-200F2.8 and tamron 28-75F2.8

Most of my primes are faster than F2.8 so I use them for low light or to go with a single purpose/focal length in mind for the day. THe 14 is rather large, but is a lot of fun. I have even shot (and posted) full frame film shots with it.
06-02-2011, 05:52 PM   #34
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Ya, I hear that - I too have a ton of equipment including about 6 or 7 film bodies, I don't like selling my stuff either (although I sold a film body and lens on here).


--

06-02-2011, 06:03 PM   #35
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QuoteOriginally posted by Siegfried Quote
Dan,
Thanks for the test! But I'm sorry to see it's missing DA14 and 15 Lim. I wish you could re-run it once again after you've got these two babies added to your photo bag!

Zig
Not likely!
06-02-2011, 07:02 PM   #36
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You know, the whole idea of a still life standard setup shot so several forum members could take as close to the same shot as possible has some merit

I keep thinking of a couple of well detailed LEGO sets on the 15 inch square Lego pads would be possible
06-02-2011, 07:35 PM   #37
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Dan,
- if you donna plan getting 15Lim then it means you've got enough lenses in that focal range
- if you donna plan getting 15Lim then it means you've got better performing lens(es)
- if you donna plan getting 15Lim then it means you're strong enough to withstand your LBA

Dan,
I hate you.

Sincerely,
Zig
06-02-2011, 10:10 PM   #38
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Well truth be told, I did have the 15ltd and sold it!

I wasn't terribly impressed (at least by my copy). Maybe it was my lack of skill too!
But from what I can tell DA12-24mm is of similar quality and has the advantage of being a zoom.

06-03-2011, 04:24 AM   #39
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QuoteOriginally posted by DanielT74 Quote
But from what I can tell DA12-24mm is of similar quality and has the advantage of being a zoom.
I heard that more than once before.

I'm surprised how much better the images from the Sigma 10-20 look compared to the Pentax 12-24. It may have some CA as well, but in terms of sharpness -- at least in your samples -- it easily beats the Pentax 12-24.
06-03-2011, 04:46 AM   #40
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Hmmm.... I don't see the advantage you speak of, Class A. The first images Sigma 10-20 is at f4.5 while DA12-24 is at f4, there is a touch more sharpness in the corners which is to be expected at a smaller aperture (I can see it on the wine bottle label). But the centre looks crisper in DA12-24 to me and at f5.6, they are pretty even. Sigma is an impressive performer I agree with less fringing but some aberrations in the corners (like the paper that's turned blue). It also seems to show more distortion.

Last edited by DanielT74; 06-03-2011 at 05:23 AM.
06-03-2011, 06:15 AM   #41
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QuoteOriginally posted by DanielT74 Quote
But the centre looks crisper in DA12-24 to me and at f5.6, they are pretty even.
I think that's because the focus is further back with the Sigma. If they had been focused at the exact same spot, I think the Sigma's centre crop would look at least as sharp.

Maybe the corners won't look as good then anymore. I've been only looking at these, to be honest, because they are the most difficult to get right.

The f/4 to f/4.5 difference should be pretty much inconsequential (1/3 stop difference). I didn't try to check at which focal length you used the Sigma. If that's wide open (e.g., because it is at 12mm rather than 10) that's very impressive.

Thanks for the comparison, BTW!
06-03-2011, 06:22 AM   #42
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The comments comparing the Sigma 10-20 and DA 12-24 are interesting. For the record, I own the Sigma, but I have had many purists quote specificatios stating the Pentax was much better, especially in terms of distortion. The problem is that distortion always is compared at maximum and minimum focal lengths, it is easier to manage distortion at 12 mm than 10 and much easier at 24 as opposed to 20. I would love to see distortion of both at 14mm, which should be in the sweet spot for both, and compare these to the samyang (which I also own).

I know the samyang distorts, and in my mind it is worse than the sigma, but I have not put them head to head. What I love about the samyang is the sharpness and the management of flare, which are impressive.

Flare resistance would be another interesting comparison (Point each into a bright light or the sun, for example)
06-03-2011, 07:10 AM   #43
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not sure where the Sigma is better here, other than better CA control.


Sigma 10-20


DA12-24


Sigma 10-20


DA12-24
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