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Archive 2008 · Sigma 50mm: Marmite Bokeh
  
 
Chez Wimpy
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p.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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.6 #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
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