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04-23-2014, 04:27 AM   #16
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QuoteOriginally posted by DSims Quote
Good point. I was also noticing this, while looking through the link you provided. The Sigma does impressively exceed what was previously available - at least in sharpness from a chart. So it deserves credit here.


Note that the Pentax DA*55/1.4 was the best 50ish lens (according to Imaging Resource, I believe) before the Sigma Art and OTUS arrived this year.

Both the OTUS and Pentax give better and more realistic looking test scenes to me - let alone what they can do in the real world. The DA*55 is a fine lens that's right under our noses, and I'd still pick it over the new Sigma - as well as the old one.
I tried 2 DA* 55mm lenses before going with the Sigma. Coming over from Canon I had always avoided Sigma because of AF issues. I was using the K-7 at the time, and neither of the DA* 55mm lenses I bought could AF consistently enough to make it through the first week. The Sigma had faster and actually more accurate AF and was sharper from F/1.4 to F/4.0. I really wish Pentax would improve this lens. I want a weather sealed lens in this focal length, and currently that is my only option.

---------- Post added 04-23-14 at 06:28 AM ----------

If Sigma produces the 24mm F/1.4 to the same standards as the 35mm Art, then they will sell all they can make. Its a focal length that works well for both FF & APS-C.

04-23-2014, 05:35 AM   #17
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Sigma's secret is very large glass.

The 18-35 and the new 50mm are enormous lenses. The Art 50 is 810 g and 99.9mm x 85.4mm. The DA*55 is 375 g and 70.5 x 66mm.

Sigma is pulling a Zeiss with AF. Their marketing strategy is test results and not real world practicality. Sigma prices well because they can jump mounts. Good glass but HUGE.

I am sure this rumoured 24mm will also be a monster.
04-23-2014, 05:47 AM   #18
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QuoteOriginally posted by Aristophanes Quote
Sigma's secret is very large glass.

The 18-35 and the new 50mm are enormous lenses. The Art 50 is 810 g and 99.9mm x 85.4mm. The DA*55 is 375 g and 70.5 x 66mm.

Sigma is pulling a Zeiss with AF. Their marketing strategy is test results and not real world practicality. Sigma prices well because they can jump mounts. Good glass but HUGE.

I am sure this rumoured 24mm will also be a monster.
I walked around the local botanical garden. I say 1/3 people there had DSLRs. All were Nikon and Canon with really big lenses. People much smaller than me with huge full frame cameras and matching lenses.

My point being, here in Pentax land, people value smaller and slower much more than the average DSLR consumer.
04-23-2014, 05:52 AM   #19
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I think this is good news for us Pentaxians, as we don't have any Pentax prime between 21mm and 31mm. I just hope this Sigma isn't as huge as the other art lenses. To me, the size and weight are a real drawback

04-23-2014, 06:05 AM   #20
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The size and weight do not bother me. You should see my hiking kit. Having one of these on the front of my camera wouldn't bother me a bit.
04-23-2014, 09:29 AM   #21
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QuoteOriginally posted by Aristophanes Quote
Sigma's secret is very large glass.

The 18-35 and the new 50mm are enormous lenses. The Art 50 is 810 g and 99.9mm x 85.4mm. The DA*55 is 375 g and 70.5 x 66mm.

Sigma is pulling a Zeiss with AF. Their marketing strategy is test results and not real world practicality. Sigma prices well because they can jump mounts. Good glass but HUGE.

I am sure this rumoured 24mm will also be a monster.
I don't think this is the only secret but it is certainly part of the story. After all, Sigma lenses always have been abt if not quite a bit bigger than OEM comparable lenses.

They aren't alone though, Samyang does pretty much the same and I think lately Samyang and Sigma will effectively compete directly with each other.
That's probably why:
* Samyang canceled their 50mm projects.
* Samyang seems to be interested in AF lenses.

If Samyang wanted to sell a manual focus 50/1.4 at about 800 dollars/Euros, they'd be killed instantly by the Sigma.

And yes, the 24Art will be huge, of course it will.

---------- Post added 23-04-14 at 17:41 ----------

QuoteOriginally posted by Winder Quote
I tried 2 DA* 55mm lenses before going with the Sigma. Coming over from Canon I had always avoided Sigma because of AF issues. I was using the K-7 at the time, and neither of the DA* 55mm lenses I bought could AF consistently enough to make it through the first week. The Sigma had faster and actually more accurate AF and was sharper from F/1.4 to F/4.0. I really wish Pentax would improve this lens. I want a weather sealed lens in this focal length, and currently that is my only option.
Well, this isn't surprising since the 55/1.4 was/is (pick the one you fancy) destined to be a portrait lens and the Sigma is clearly optimized for sharpness.
(not counting the SDM thingie which is veryreal though).
04-23-2014, 11:30 AM - 1 Like   #22
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QuoteOriginally posted by cali92rs Quote
My point being, here in Pentax land, people value smaller and slower much more than the average DSLR consumer.
The Sigma 85mm is my most used and favorite lens. Not everyone in Pentax land values smaller and slower.
04-23-2014, 11:52 AM   #23
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QuoteOriginally posted by thibs Quote
* Samyang canceled their 50mm projects.
Yeah, but the Samyang 50mm would have the advantage of being f1.2. This would put it into a different league, and at f1.2 focusing on a DSLR is.. odd at best. I find it too bad Samyang cancelled their 50mm. I am interested in what they make next.

04-23-2014, 11:54 AM   #24
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QuoteOriginally posted by Winder Quote
The Sigma 85mm is my most used and favorite lens. Not everyone in Pentax land values smaller and slower.
I agree - 85/1.4 is extremely useful, and going from the smaller FA77 to the FA*85 didn't cause a problem for me - for some reason I use it even more than the FA77, if anything. It may also be my most used lens.
04-23-2014, 11:55 AM   #25
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I'm an unabashed Sigma fanboy at this point. I own their 10-20, 28, and 105 Macro. I will happily buy this lens if/when it is available for K mount. I am actually considering buying a Sigma dslr so I can have my pick of their lenses.
04-23-2014, 12:05 PM   #26
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QuoteOriginally posted by Homo_erectus Quote
I'm an unabashed Sigma fanboy at this point. I own their 10-20, 28, and 105 Macro. I will happily buy this lens if/when it is available for K mount. I am actually considering buying a Sigma dslr so I can have my pick of their lenses.
I will buy the dslr equivalent of the dp quattro.. The lens line up id getting really good (8-16, 24/1.4, 35/1.4 50/1.4, 70/2.8) and the foveon sensor roocks
04-23-2014, 12:31 PM   #27
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That's pretty in line with what I am thinking carrrlangas.
04-23-2014, 12:48 PM   #28
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QuoteOriginally posted by Na Horuk Quote
Yeah, but the Samyang 50mm would have the advantage of being f1.2. This would put it into a different league, and at f1.2 focusing on a DSLR is.. odd at best. I find it too bad Samyang cancelled their 50mm. I am interested in what they make next.
Absolutely, and I pray for Samyang to keep the aperture ring as it allows a niche market to be served (and Samsyang to get theses users rather than anyone else).
04-23-2014, 12:56 PM   #29
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QuoteOriginally posted by Homo_erectus Quote
I'm an unabashed Sigma fanboy at this point. I own their 10-20, 28, and 105 Macro. I will happily buy this lens if/when it is available for K mount. I am actually considering buying a Sigma dslr so I can have my pick of their lenses.

NOOOOOOOOOOOOOOOOOOOOoooooooooooooooooo.......................................... buy a Canon or a Nikon. All of their lenses to my knowledge are available in both.

I guess try a Sigma, but I'd only try one from a store with a good return policy.
04-23-2014, 01:00 PM   #30
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QuoteOriginally posted by ElJamoquio Quote
I guess try a Sigma, but I'd only try one from a store with a good return policy.
Well, true the current generation is not very appealing due to responsiveness, lack of live view.. But the body is really good, lenses for the system excelent and the DP merrills are already good. The DP Quattro should be great. When they make SD Quattro with newer sensor and processor... A very, very attractive system.
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