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Archive 2008 · Sigma 50mm: Marmite Bokeh
  
 
Chez Wimpy
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p.5 #1 · Sigma 50mm: Marmite Bokeh


trumpet_guy wrote:
I have custom function 4 set to value 3.
This moves the autofocus from the shutter button to the * button.
I am in one-shot AF mode.


I do the same but keep AF mode as Ai-Servo. When I need focus tracking I hold down on the star, but usually I focus once with it (20D with the 3x precision center point), recompose, and shoot. Having AI-Servo available at all times is critical with my candids... even center framing necessitates a crop in post.


Jul 06, 2008 at 04:57 AM
05xrunner
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p.5 #2 · Sigma 50mm: Marmite Bokeh


I like mine alot. I am glad I waited for it


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Jul 06, 2008 at 04:39 PM
cogitech
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p.5 #3 · Sigma 50mm: Marmite Bokeh


05xrunner,

Sweet! Especially that first shot. Wide open?

BTW, any users of this lens care to comment on the manual focus action on this lens?

Jul 06, 2008 at 05:04 PM
05xrunner
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p.5 #4 · Sigma 50mm: Marmite Bokeh


no they where shot at 2.8 i exceeded my shutter speed if I went to 1.4 I have tested it at 1.4 and mine seems to be nice and sharp wide open.

Jul 06, 2008 at 06:58 PM
mh2000
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p.5 #5 · Sigma 50mm: Marmite Bokeh


WOW!!! I know what a Canon 50 would have done to the those backgrounds. This is very nice bokeh to be coming from a modern 50mm.

Jul 06, 2008 at 07:15 PM
badlydrawnboy
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p.5 #6 · Sigma 50mm: Marmite Bokeh


I receive mine tomorrow or Tuesday and I'll definitely post some shots wide open.

Jul 06, 2008 at 07:36 PM
05xrunner
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p.5 #7 · Sigma 50mm: Marmite Bokeh


these are shot at 1.4 and USM applied Amount 100, Radius 2.0 Threshold 0 typical amount


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Edited on Jul 06, 2008 at 08:52 PM


Jul 06, 2008 at 08:52 PM
badlydrawnboy
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p.5 #8 · Sigma 50mm: Marmite Bokeh


That's pretty impressive for wide open performance.

Jul 06, 2008 at 09:03 PM
05xrunner
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p.5 #9 · Sigma 50mm: Marmite Bokeh


I am very pleased with this lens

Jul 06, 2008 at 09:04 PM
simon_k
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p.5 #10 · Sigma 50mm: Marmite Bokeh


I really want one... why can't they send proper lenses to my local shop?

Jul 06, 2008 at 09:12 PM
brainiac
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p.5 #11 · Sigma 50mm: Marmite Bokeh


> What remains as mysterious as the Mona Lisa's smile is the uncannily beautiful shapes drawn by the Minolta 58mm – a lens that 'technically' doesn't have textbook perfect bokeh, if we assume the benchmark to be 'buttery-ness'. And yet . . .

yes - the rokkor's bokeh is beautifully quirky:


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In a couple of places where the highlights are close enough to each other, you can see beautiful venn diagram style overlapping of 'perfect' bokeh, i.e. neither soft nor harsh, with edges retained in superposition. You see Olympus style cup shaped bokeh towards the top right corner, but towards the center you can make out the somewhat rounded f2 aperture blades. Not soft and creamy, not harsh, but full of balance, serendipity, and nice well defined edges. That's one of the reasons I am keeping my Rokkor.

In my view 'perfect' bokeh, that with well defined edges but neither soft nor harsh, often seems to go hand in hand with strong 3D effect.

Edited on Jul 06, 2008 at 11:48 PM


Jul 06, 2008 at 11:45 PM
brainiac
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p.5 #12 · Sigma 50mm: Marmite Bokeh


CKrueger wrote:
mh2000 wrote:
I am completely baffled by the people claiming the Sigma has too smooth a bokeh... worried that somehow a background is going to magically be smeared completely away with a 50mm lens. Stop down to f2 or f2.8 if you think you are getting too much blur. Much easier to deal with smooth than a harsh and busy bokeh.

I think there is an anti-Sigma anti-nonalternative lens bias going on here (honestly, I probably suffer that a little myself... nothing sexy or cool about a Sigma 50/1.4, right?)


Wow, that's exactly what I was going to say. From what you hear here, I would expect if you shot a Canon 50/1.4 next to a Sigma 50/1.4 at f/11, the Sigma's background would like Monet threw up on the background, while the Canon would be razor sharp. Clearly this Sigma has some sort of dark magical power!


Some people here have spent the last few years (and untold thousands of dollars) buying and testing all varieties of exotic lenses to find The Perfect Bokeh. When they find a particularly good lens, they post images with some noisy background thrown out of focus, and other members coo "Look at the bokeh! It's so creamy! Better than that Canon crap the peasants use!"

Fast forward to today, as Sigma releases a 50 with perhaps the creamiest bokeh of all. Sigma!? Perhaps predictably, the nobility staggers for a moment, but quickly regains its composure and comes up with a plan of attack: "The bokeh is too smooth!"

TOO SMOOTH!?

I expected the exotic lens evangelists to find something on the Sigma to attack. Perhaps the "Sigma yellow"? Or Sigma's typical hyper-sensitive AF? Perhaps a build quality] criticism ("eek, I saw plastic!")? Or if all else fails, the old Sigma chipping horrors? But too smooth?

I understand that image quality is completely subjective, but I never expected the faithful to rally around the very quality that they praise in their own lenses. This is a baffling new height of snobbery. It's also a great litmus test to see who here is truly looking for high performance lenses, versus who is just looking for the most exclusive lenses to bring to show & tell.

Sigma should call up Zeiss and ask them if they would like to produce a rebranded version of this lens. They could sell it for $1000 to some folks here.


Yeah! You're all over it.

Jul 06, 2008 at 11:53 PM
Spyro P.
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p.5 #13 · Sigma 50mm: Marmite Bokeh


I think this f2.8 shot by 05xrunner showed something different that I really like

Jul 07, 2008 at 12:05 AM
 



trumpet_guy
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p.5 #14 · Sigma 50mm: Marmite Bokeh


cogitech wrote:
05xrunner,

Sweet! Especially that first shot. Wide open?

BTW, any users of this lens care to comment on the manual focus action on this lens?


The manual focus action feels the same as on the 30/1.4
which is to say, firm and fairly high gear ratio. Nothing as silky
and precise as a CZ 50/1.4 Planar, but firmer and less
cheap feeling than the Canon EF 50/1.4

The manual focus on Canon L class EF lenses feels a little nicer, but as
autofocus lenses go, the Sigma is not too bad. If you are expecting
something as smooth as a CZ prime, though, you will be disappointed.

Tim


Edited on Jul 07, 2008 at 04:54 AM


Jul 07, 2008 at 04:52 AM
Glassbottle
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p.5 #15 · Sigma 50mm: Marmite Bokeh


How's the Sigma doing for colour fringing around highlights when used wide open? The fast Canon primes all seem to suffer from it.

Edited on Jul 07, 2008 at 07:15 AM


Jul 07, 2008 at 07:14 AM
trumpet_guy
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p.5 #16 · Sigma 50mm: Marmite Bokeh


Glassbottle wrote:
How's the Sigma doing for colour fringing wide open? The fast Canon primes all seem to suffer from it.



It seems fine to me, but you can look at a full-size f/1.4 image here:
http://www.pbase.com/tswen/50compare/



Jul 07, 2008 at 07:18 AM
Glassbottle
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p.5 #17 · Sigma 50mm: Marmite Bokeh


trumpet_guy wrote:
Glassbottle wrote:
How's the Sigma doing for colour fringing wide open? The fast Canon primes all seem to suffer from it.


It seems fine to me, but you can look at a full-size f/1.4 image here:
http://www.pbase.com/tswen/50compare/


Thanks, nice set of comparisons. But I should have specified I was interested in fringing around specular highlights -- that's where the 50/1.2L and the 85/1.8, at least, are at their worst. Sunlight on water at f/1.4 would be the ideal torture test.

Here's the 50/1.2L demonstrated at photozone.de


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Edited on Jul 07, 2008 at 07:35 AM


Jul 07, 2008 at 07:31 AM
trumpet_guy
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p.5 #18 · Sigma 50mm: Marmite Bokeh


Understood. I don't have a shot like that handy.

This one with the out of focus light source shows no color fringing, wide open.



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Jul 07, 2008 at 07:58 AM
trumpet_guy
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p.5 #19 · Sigma 50mm: Marmite Bokeh


This one has a specular reflection, but was taken at f/2.8









Jul 07, 2008 at 08:07 AM
Stu Warner
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p.5 #20 · Sigma 50mm: Marmite Bokeh


The new Sigma does look like a really, really nice lens.
I think that I personally would have no complaints what so ever optically. Wide open resolution, contrast, and bokeh look faultless to my eyes. No question that it is a good choice for a 50mm IMHO.

My only remaining concerns are size/weight and reliable AF. Basically, if the AF is not particularly reliable, then I see no value in the Sigma 1.4 over my Zu 50/1.2 (Jonas B's old copy), other than perhaps better handling of CA/fringing. The Olmpus is also much lower contrast.

I really do like the look of this Sigma.

Keep the samples coming guys... I never tire of fast 50 shots

Jul 07, 2008 at 08:33 AM
FretNoMore
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p.5 #21 · Sigma 50mm: Marmite Bokeh


Agree it looks very nice optically but I'm more concerned about AF too. My intended use would be indoor sports and if the AF isn't better than the EF 50/1.4 it may not be an improvement over that lens.

Jul 07, 2008 at 09:16 AM
brainiac
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p.5 #22 · Sigma 50mm: Marmite Bokeh


CKrueger wrote:
mh2000 wrote:
I am completely baffled by the people claiming the Sigma has too smooth a bokeh... worried that somehow a background is going to magically be smeared completely away with a 50mm lens. Stop down to f2 or f2.8 if you think you are getting too much blur. Much easier to deal with smooth than a harsh and busy bokeh.

I think there is an anti-Sigma anti-nonalternative lens bias going on here (honestly, I probably suffer that a little myself... nothing sexy or cool about a Sigma 50/1.4, right?)


Wow, that's exactly what I was going to say. From what you hear here, I would expect if you shot a Canon 50/1.4 next to a Sigma 50/1.4 at f/11, the Sigma's background would like Monet threw up on the background, while the Canon would be razor sharp. Clearly this Sigma has some sort of dark magical power!

Some people here have spent the last few years (and untold thousands of dollars) buying and testing all varieties of exotic lenses to find The Perfect Bokeh. When they find a particularly good lens, they post images with some noisy background thrown out of focus, and other members coo "Look at the bokeh! It's so creamy! Better than that Canon crap the peasants use!"

Fast forward to today, as Sigma releases a 50 with perhaps the creamiest bokeh of all. Sigma!? Perhaps predictably, the nobility staggers for a moment, but quickly regains its composure and comes up with a plan of attack: "The bokeh is too smooth!"

TOO SMOOTH!?

I expected the exotic lens evangelists to find something on the Sigma to attack. Perhaps the "Sigma yellow"? Or Sigma's typical hyper-sensitive AF? Perhaps a build quality] criticism ("eek, I saw plastic!")? Or if all else fails, the old Sigma chipping horrors? But too smooth?

I understand that image quality is completely subjective, but I never expected the faithful to rally around the very quality that they praise in their own lenses. This is a baffling new height of snobbery. It's also a great litmus test to see who here is truly looking for high performance lenses, versus who is just looking for the most exclusive lenses to bring to show & tell.

Sigma should call up Zeiss and ask them if they would like to produce a rebranded version of this lens. They could sell it for $1000 to some folks here.


Sorry - can't resist feeding the dpreview trolls.

In my job of photographer I use Canon, Nikon, Olympus, Zeiss, Leica, and Minolta lenses. I would have no problems using a Sigma. Sigma make many excellent lenses. Most of the regulars on this forum are pretty much brand agnostic, and happy to assess any lens from any manufacturer. Luckily it's easy to do that these days. On the alt image thread you will see Soligors, Vivitars, Pentacons and just about every kind of lens being shown, with just about no trolling. However, most alt forum contributors are not quality agnostic; they prioritise certain lens qualities and features over others. Often this reflects the kind of pictures that they enjoy taking, whether that be landscape or macro or astro. Good lenses are good lenses, and bad ones are bad, and snobbery and brand loyalty have nothing to do with it.

Some people like smooth bokeh, some prefer 'perfect' bokeh, and some people even like it a bit harsh. Some people like catadioptric bokeh. Everyone's entitled to her own tastes, and she's entitled to discuss it here, regardless of those who come here to troll and insult.

Often the reason alt lenses are popular here isn't snobbery, but the reverse. Take the Rokkor 58 for example. It's very nearly as good as a Canon 50L but costs about one fifth as much. The Oly 28 f3.5 is another example of a lens which is popularly discussed here because although it only costs $40, it performs nearly as well as the very best lenses in that range. That's not snobbery, it's frugality.

Sigma lenses are often discussed here, and often highly praised. I have seen the 12-24 recommended hundreds of times.

> Perhaps predictably, the nobility staggers for a moment, but quickly regains its composure and comes up with a plan of attack: "The bokeh is too smooth!"

And yes, I don't like bokeh to be too smooth. This is nothing new. You will find posts by me going back about as far as when I became a member here, which discuss my preference for edges in bokeh. It's one reason why I am not generally a big fan of Leica lenses. Other people like it smooth, and why shouldn't they? The third sample in the group below is too smooth by my reckoning. You can disagree, as many will, but there's no need to call anyone here a snob.


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What it boils down to is: you're barking up the wrong tree - go and pick a fight somewhere else.



Edited on Jul 07, 2008 at 09:50 AM


Jul 07, 2008 at 09:27 AM
Glassbottle
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p.5 #23 · Sigma 50mm: Marmite Bokeh


trumpet_guy wrote:
This one has a specular reflection, but was taken at f/2.8


Thank you for those additional samples. It's pretty clear now that this lens is remarkably free of optical vices. I'm impressed. Sigma hasn't impressed me like this before, great feat of engineering though the 12-24 mentioned earlier by Brainiac may be.

Personally, I love this 50's smooth bokeh, perfect for isolating subjects and leaving only a suggestion of their environment, which is something I need to do quite often.

I think I'll get one.

Jul 07, 2008 at 09:56 AM
brainiac
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p.5 #24 · Sigma 50mm: Marmite Bokeh


And btw, while many prefer a softer look, I am not alone in my preference for bokeh with edges, as this diagram from a page about bokeh illustrates:


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Here's a real world example, and possibly an area where the edges in the bokeh seem to sharpen up the hair that it silhouettes extending d.o.f. and creating more 3D effect. Only a conjecture, but a characteristic often seen with particular lenses.



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Edited on Jul 07, 2008 at 10:38 AM


Jul 07, 2008 at 10:10 AM
biotar
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p.5 #25 · Sigma 50mm: Marmite Bokeh


@ brainiac

I agree with you that bokeh is very subjective, as can also be read in the article you cite. In neutral terms the bokeh of the sigma is of course 'good' and can satisfy many customers for professional use, but that does not mean that you're a snob if you personally don't like it.

I do however have a question apart from this, as i have read some thoughts of yours on the relation between bokeh and 3d effect.
Recently I bought a jupiter 37a that delivers quite similar bokeh to this sigma. The jupiter gives a great 3D effect however even with smooth bokeh. This leads me to believe the following: if bokeh looks similar to what your own eyes produce, does that perhaps render a 3D effect?

sorry for posting this here but the other topic is lost in language

Edited on Jul 07, 2008 at 10:45 AM


Jul 07, 2008 at 10:39 AM




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