[Wired]

I may look at this in F mount as I don't need another K mount 50. However...the item I do want to know is if that Sigma 135mm f1.8 that was rumored a while back is going to become reality.

[Mistral75]

I'm not sure how much bigger or heavier this is than the DA55. Nevertheless I use my FA50 indoors only so I can definitely see a use for a great-bokeh (if it has it) heavy, big lens.

Looks about twice as big to me (not counting the DA 55's hood).
(...)

From the report made by Digital Camera Watch on the Sigma booth at CES:

http://dc.watch.impress.co.jp/docs/news/20140108_629952.html

1/ A picture giving a concrete idea of the Sigma Art 50mm F/1.4 DG HSM's size



2/ Even more eloquent, a size comparison between Sigma Art 50mm F/1.4 DG HSM (left) and Sigma Contemporary 18-200mm F/3.5-6.3 DC Macro OS HSM (right).

[Mistral75]

There is a lot of glass in the rear element, which means that there is little room for the cell holding the element, the barrel and screw linkage to either side - I'm not sure if you could slip everything in there in such a way that leaves room for the glass to move in an out while still maintain a robust focusing mechanism without widening the barrel to the point where the focus ring interferes with the prism housing.

(...).

From the same report by Digital Camera Watch, a close-up view of the lens's rear:

[seventysixersfan]

" Yes, eventually all Sigma lenses will be part of the Global Vision line of lenses, it will take some time though."

although I'm not sure this answers the question you had about whether there will be more lenses released for Pentax K-mount. I read this response as saying that all older Sigma lenses will eventually be redesigned and released under the Global Vision "art, sport, and contemporary" lines.

[Apapukas]

Looks like 50 is going to be even larger (and heavier) than 35!

[JinDesu]

That hood looks pretty good. Longer than the older one.

[Wired]

holy bananas that's a huge lens!

[ogl]

Sigma has announced another prime in the Art series, a 50mm f1.4 lens (covering FF). Standard Prime Lenses - SigmaPhoto.com[/url]

But no version for Pentax. Even in the future. Is there any sense of discussing this lens?

[ogl]

Concerned with the lack of K Mount, I wrote to Sigma USA if they plan on releasing more Art lenses for Pentax. They wrote back within a couple of hours:

" Yes, eventually all Sigma lenses will be part of the Global Vision line of lenses, it will take some time though."

So good news, then. I probably won't get the Sigma 50mm as I am happy with my DA*55mm but I will probably go for the 35mm.

They said the same about new 30/1.4. But still no new Sigma 30/1.4 for Pentax.
It's standard answer. I think.

[mrNewt]

But no version for Pentax. Even in the future. Is there any sense of discussing this lens?

Is there any point discussing anything, really!?
I guess the hope is that it might get released in the future...

[hangman43]

Polymers expand/contract 5-10x more than metals. They're less stable.

As a fun aside, look at the gaps in the body panels of a Saturn car made before ~2002, if any are still on the road. You could stick your fingers in some of them.

Actually I drive a 2001 Saturn and it is not that bad no bad gaps that I can find

[Smeggypants]

The lens isn't labeled as WR but it probably will have the same build quality and features as the 35mm.

That means it will be IF and have a very good, tight build. So, I believe it will be able to take a little rain, dust, cold with no problem.

I don't understand people complaining about plastic. Glock pistols, G-36 rifles are made mostly of plastic because of weight and durability compared to metal.

I don't use weapons of violence as a benchmark for build quality.

[JinDesu]

I don't use weapons of violence as a benchmark for build quality.

For technical reasons, or just moral reasons?

[Apapukas]

I don't use weapons of violence as a benchmark for build quality.

My point was to show the capabilities of plastic as a very advanced material that can be used in many different areas with a great success.

[Wired]

My point was to show the capabilities of plastic as a very advanced material that can be used in many different areas with a great success.

it could also be argued that with the glock if it was dropped in cold weather and the plastic was cracked/compromised there could be an issue with it. This is why my friend whos in a local gun club does not allow glocks. I'm not knowledgeable about firearms so I'm not sure the validity of the claim.