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01-08-2014, 06:13 AM   #31
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QuoteOriginally posted by Class A Quote
.. But if it needs to be made large then so be it. I prefer that to a small beauty that limits your options.
As life itself, good art is never created out of abundance.

01-08-2014, 06:42 AM   #32
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QuoteOriginally posted by Apapukas Quote
So, what I am trying to say, it is not only about sharpness, bokeh etc but how much excitement and joy you will feel using that particular lens
Absolutely.

Some lenses, e.g. the FA 43/1.9, inspire me to use them and get the best out of them. So I completely agree with your statement.

However, I don't agree that a Sigma 35mm cannot be such a lens. Maybe your feelings towards this lens are influenced by the (commercial) context you used it for.

The Rokinon (Samyang) 85/1.4, for instance, is a pretty big lens, however it has excellent image quality and nice manual focusing so it also is a lens that inspires me to use it, even though it is not a small, limited lens.
01-08-2014, 06:56 AM   #33
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QuoteOriginally posted by Class A Quote
Absolutely.

Some lenses, e.g. the FA 43/1.9, inspire me to use them and get the best out of them. So I completely agree with your statement.

However, I don't agree that a Sigma 35mm cannot be such a lens. Maybe your feelings towards this lens are influenced by the (commercial) context you used it for.

The Rokinon (Samyang) 85/1.4, for instance, is a pretty big lens, however it has excellent image quality and nice manual focusing so it also is a lens that inspires me to use it, even though it is not a small, limited lens.
I believe you are right about he 35mm. As I said, it is absolutely gorgeous optically (and I am very happy user), it is just that after a couple hours of active shooting with it (k5 +grip), I usually start to feel a little tired and just want get over with
01-08-2014, 07:02 AM   #34
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So what do you think will be the use for this new huge Sigma 50mm? Mostly for studio photography, due to its weight? I mean, its not for street or travel or outdoor.. At such a size, I would normally expect it to be faster than f1.4.The FA 50mm f1.4 is miniscule compared to the new Sigma, not to mention the lightweight DA 50mm f1.8.
Then again, I guess if you are using a massive Canikon FF, you need a large lens so it doesn't look weird

01-08-2014, 07:07 AM   #35
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When it comes to joy of using a specific lens, some people (like myself) like the weight of a bigger lens. Feels more comfortable. Smaller stuff sometimes feels too fragile in my hands and I'm mostly stressed about breaking the darn things . Plus, I noticed (for me) that a larger lens helps me with stability when taking a shot.
I can go around with my 70-200mm f2.8 all day long without complaining.

I've always liked Sigma and this lens looks very good and seems to perform.
Interested in it and I would most probably buy one... if it would came in K mount.

Last edited by mrNewt; 01-08-2014 at 07:57 AM.
01-08-2014, 07:44 AM   #36
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QuoteOriginally posted by Na Horuk Quote
So what do you think will be the use for this new huge Sigma 50mm? Mostly for studio photography, due to its weight? I mean, its not for street or travel or outdoor.. At such a size, I would normally expect it to be faster than f1.4.The FA 50mm f1.4 is miniscule compared to the new Sigma, not to mention the lightweight DA 50mm f1.8.
Then again, I guess if you are using a massive Canikon FF, you need a large lens so it doesn't look weird
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.
01-08-2014, 07:46 AM   #37
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My tamron 70-200 is one of my favorite lenses to use and it weighs so much that I had to buy a special strap and figure out new ways to hold and support it.

I'm becoming a bit of a Sigma fan lately. I got their 10-20mm F/3.5 and 28mm F/1.8 lenses around thanksgiving and they are both pretty awesome. I was already considering their 50mm lens so this one really has my interest. Here's hoping they release it for K mount.

At this rate, in a few years, I'm going to have a full kit of Sigma lenses.
01-08-2014, 07:53 AM   #38
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Dunno.
Happy enough with my FA50/1.4 (actually better wide open than my Voigtlander 58/1.4) to imagine having a 2 to 3 times heavier/bigger lens...

01-08-2014, 07:58 AM   #39
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QuoteOriginally posted by Zygonyx Quote
Dunno.
Happy enough with my FA50/1.4 (actually better wide open than my Voigtlander 58/1.4) to imagine having a 2 to 3 times heavier/bigger lens...
The outlining around point-of-light bokeh is quite harsh. Probably doesn't matter at all to most people.
01-08-2014, 07:58 AM   #40
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QuoteOriginally posted by ElJamoquio Quote
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). I think the DA 55 is adequate, although certainly it would be a beautiful thing if Pentax would release a 50 f1.2 with auto focus.
01-08-2014, 08:14 AM   #41
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An interesting discussion on the nature of the compromises of lens design. If a lens is too heavy for me to lug around (or big enough that I feel awkward and out of place), I simply won't use it, and so won't be getting any pictures that way. Much as I'd love the IQ the Sigma or the Zeiss Otus would bring, I'll stick with my M50/17 and S-M-C Takumar 50/1.4 for they are much more usable for my purposes. It is probably a matter of individual situation and preference. In days past, this wasn't so much of an issue as most weren't examining their slides at such magnifications as today's high-MP DSLR's create (nor was focusing as precise, and there was often more grain). Now it is, and I think there is room for both the big, superlative IQ and the small and light (at some IQ cost) philosophies. It does seem clear that Pentax's philosophy tends towards the smaller and lighter side. To me, this is fine, but I would also like to see a couple of killer sharp optics to help attract further buyers to Pentax.
01-08-2014, 08:35 AM   #42
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QuoteOriginally posted by macTak Quote
An interesting discussion on the nature of the compromises of lens design. If a lens is too heavy for me to lug around (or big enough that I feel awkward and out of place), I simply won't use it, and so won't be getting any pictures that way. Much as I'd love the IQ the Sigma or the Zeiss Otus would bring, I'll stick with my M50/17 and S-M-C Takumar 50/1.4 for they are much more usable for my purposes. It is probably a matter of individual situation and preference. In days past, this wasn't so much of an issue as most weren't examining their slides at such magnifications as today's high-MP DSLR's create (nor was focusing as precise, and there was often more grain). Now it is, and I think there is room for both the big, superlative IQ and the small and light (at some IQ cost) philosophies. It does seem clear that Pentax's philosophy tends towards the smaller and lighter side. To me, this is fine, but I would also like to see a couple of killer sharp optics to help attract further buyers to Pentax.
Agree.

Even though, at least one killer lens there is. If we'll believe what dxo says, Pentax 55mm scores the same as Sigma 35mm on K3.
01-08-2014, 08:56 AM   #43
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Regardless of where they have been made, I have long found Sigma's lenses to reflect a strategy of focusing on optical quality while keeping their prices lower than the big boys, necessarily leading to sacrifices in other areas, mainly build and mechanical design:
  • Cheap materials used, including cheap plastic gearing where other manufacturers use metal
  • Attachment of critical components using only cellophane sticky tape. While the careful use of tape can be a legitimate design decision, they should at least have been using a metal tape that would not degrade over time
  • Reverse engineering (rather than licensing) of OEM AF/Flash communication specs, leading to incompatibilities across camera generations
  • Crappy HSM (and for that matter screw drive) components leading to failure rates in some models that make the Pentax SDM 16-50 look like a paragon of reliability.
  • Finishes that degrade and flake over time, regardless of of level of use
  • Large size and weight for what they are trying to accomplish
I admit I have not used any of the ART lenses (The last Sigmas I used were EX DG's), so I can't comment on their build quality.



This is not meant as a criticism of the image quality of Sigma lenses - some are quite excellent. Likewise, they do cover many niches that the OEMs don't. But regardless of where they are made, the quality reflects a conscious design and manufacturing philosophy that has often led to substandard results (compared to the OEMs) in the non-glass componentry of the lens.



Interestingly, I find that Tamron, who are the most obvious comparison to Sigma in terms of price, market strategy, etc., tends to produce better-built lenses, but ones whose optics (taken as a whole - they do make some fabulous lenses) are not quite as good as Sigma's. Different priorities, different results, I suppose.



QuoteOriginally posted by scratchpaddy Quote


Actually, a new 135 f/1.8 is supposedly on Sigma's to-do list, if rumors are to be believed. It will be enormous, for sure.

Re: your comment on build quality, have you handled any of the new Art lenses? They are extremely solid, much more so than their previous offerings. Sigma is also one of the few remaining companies who don't outsource production to Vietnam, China, the Philippines, etc.

Last edited by dcshooter; 01-08-2014 at 09:03 AM.
01-08-2014, 08:57 AM   #44
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QuoteOriginally posted by Apapukas Quote
Even though, at least one killer lens there is. If we'll believe what dxo says, Pentax 55mm scores the same as Sigma 35mm on K3.
You are right that Pentax does have some really sharp leneses (did not want to imply that they don't, though as to dxo, it is the overall score that is the same; the DA55 and all the Pentax primes they tested lag behind the Sigma on sharpness), but it is about perception--they would do well (in my opinion) to make a new lens whose sharpness (like the Sigma 18-35mm Art) really gets people to stand up and take notice.
01-08-2014, 08:59 AM   #45
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Considering the size of the glass involved, along with the space required for the AF mechanism that would be one large lens as well! Given the geometry of the K mount, I'm not sure it would even be possible with Pentax's existing 1.2 lens formula - but hey, everyone is clamoring for new Ricoh lens designs rather than just HD refreshes, aren't they?

QuoteOriginally posted by Rondec Quote
Looks about twice as big to me (not counting the DA 55's hood). I think the DA 55 is adequate, although certainly it would be a beautiful thing if Pentax would release a 50 f1.2 with auto focus.
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