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Thread started 10 May 2010 (Monday) 12:21
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Sigma 8-16mm f/4.5-5.6 DC HSM

 
yagger
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Nov 11, 2010 12:56 |  #136

jacobsen1 wrote in post #11265078 (external link)
^ if you've never used filters why not go for it?

but even so, YOU CAN USE FILTERS, you just have to hand hold them or get creative with a holder/adapter: http://www.benjacobsen​photo.com …s-that-cant-take-filters/ (external link)
I'm not sure if this lens needs 4x6s or the X-pros (bigger)... If one of you guys wanted to test that it'd be great info to know. All you do is cut a piece of paper to 4x6 (or use and index card/post card) and hold it in front of the lens, right up against the hood's pedals. If you can see ONLY paper through the viewfinder it'll work as a filter basically.

^ does anyone mind testing this out and letting us know please?


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jacobsen1
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Nov 11, 2010 14:06 |  #137

this part specifically:

jacobsen1 wrote in post #11265078 (external link)
I'm not sure if this lens needs 4x6s or the X-pros (bigger)... If one of you guys wanted to test that it'd be great info to know. All you do is cut a piece of paper to 4x6 (or use and index card/post card) and hold it in front of the lens, right up against the hood's pedals. If you can see ONLY paper through the viewfinder it'll work as a filter basically.


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SeverianTL
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Nov 11, 2010 15:19 |  #138

Paper filter test: Success

No problem, men. No problem. You need but ask nicely. ;)

Wasn't paying much attention when I did this, so actually tested with a smaller 5 x 4 instead of a 6 x 4. Same difference, i.e., none. Cut the paper, held up to lens: no fingers to be seen!

Proof: Blue sky seen through a 5" x 4" piece of white paper @ 8mm

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Guess what, you can go smaller. But not hand held. Here is a shot @ 8mm of the sky seen through a piece of 4" x 3" paper pressed against a window by the built-in lens hood. Fingers would have been seen if it was hand held.
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The lens cap adapter dimensions: outer diameter = 3 1/32" = 77mm; thickness =1 1/32" = 26.2mm; inner diameter varies due to a lip that limits its travel, but the end where the cap clicks in is threaded and will accept a 72mm filter. ^Above^ you see the adapter nestled atop the threads of a 77mm ring. [Note that in the photo above I'm merely demonstrating that my measurements are correct and the OD of the cap adapter is 77mm. The threaded part of the adapter is 72mm.]
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There is only a 1/32" gap between the focus ring and the bottom of the adapter. If you remove the retaining ring inside the adapter and slide it down further on the hood, you will impinge on the focus ring.

At first it looks like a horse's ass. But click it, and it turns into a unicorn! :cool:
5D3, 7D, EOS M. Sigma: 8-16mm, 18-50mm/2.8 macro, 35mm/1.4 A, 50mm/1.4, 50mm/1.4 A , 120-400mm. Canon: 8-15mm/4 Fisheye, 16-35mm/4 IS, 24-105mm/4 IS, 70-200mm/4 IS, 100mm/2.8 IS macro, EF-M 18-55 IS STM.

  
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SeverianTL
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Nov 11, 2010 22:23 |  #139

Just in case you might be thinking ... "Hmmm, I don't really need jacobsen1's MacGyver-like tricks (external link). I can just attach a 72mm filter directly to the lens cap adapter." Well, think again. You really do need to do something like Ben Jacobsen demonstrates in his video.

Here's what happens when you attach filters directly to the lens.

Lens with adapter attached sans filter @ 16mm. A little vignetting but not bad.

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Same scenario with filter.
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@ 8mm w/o filter
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@ 8mm with filter
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As you can see, not very pleasant!

At first it looks like a horse's ass. But click it, and it turns into a unicorn! :cool:
5D3, 7D, EOS M. Sigma: 8-16mm, 18-50mm/2.8 macro, 35mm/1.4 A, 50mm/1.4, 50mm/1.4 A , 120-400mm. Canon: 8-15mm/4 Fisheye, 16-35mm/4 IS, 24-105mm/4 IS, 70-200mm/4 IS, 100mm/2.8 IS macro, EF-M 18-55 IS STM.

  
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titirez
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Nov 12, 2010 00:44 |  #140

Hello! I love this lens!


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5DmkII || T1i || Canon 70-200 F2.8 L IS || Sigma 8-16mm || 100 f2.8 usm || 430EX II + LightSphere ||
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scorpio_e
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Nov 12, 2010 12:27 |  #141

SeverianTL wrote in post #11269263 (external link)
Just in case you might be thinking ... "Hmmm, I don't really need jacobsen1's MacGyver-like tricks (external link). I can just attach a 72mm filter directly to the lens cap adapter." Well, think again. You really do need to do something like Ben Jacobsen demonstrates in his video.

Here's what happens when you attach filters directly to the lens.

Lens with adapter attached sans filter @ 16mm. A little vignetting but not bad.
QUOTED IMAGE

Same scenario with filter.
QUOTED IMAGE

@ 8mm w/o filter
QUOTED IMAGE

@ 8mm with filter
QUOTED IMAGE

As you can see, not very pleasant!


How are you adjusting for the black areas on the wide end since the image is in the center?
Lightroom ?


www.steelcityphotograp​hy.com (external link)

  
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SeverianTL
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Nov 12, 2010 13:03 |  #142

scorpio_e wrote in post #11272231 (external link)
How are you adjusting for the black areas on the wide end since the image is in the center?
Lightroom ?

Didn't do anything since these were intended as examples of what not to do. Shot raw and processed in LR 2.7 or 3.0. I uploaded these to photobucket in early June; I can't remember which version of LR I was using at the time. Anyway, default LR settings and resized and exported directly to photobucket.


At first it looks like a horse's ass. But click it, and it turns into a unicorn! :cool:
5D3, 7D, EOS M. Sigma: 8-16mm, 18-50mm/2.8 macro, 35mm/1.4 A, 50mm/1.4, 50mm/1.4 A , 120-400mm. Canon: 8-15mm/4 Fisheye, 16-35mm/4 IS, 24-105mm/4 IS, 70-200mm/4 IS, 100mm/2.8 IS macro, EF-M 18-55 IS STM.

  
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scorpio_e
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Nov 12, 2010 16:04 |  #143

Hmmm What you have with the barrel look is what I am getting. The only way I do not get the vignette is going all the way to 16mm. Just got the lens yesterday so I do not have any done in post processed yet.


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scorpio_e
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Nov 12, 2010 16:11 |  #144

DUH.....Maybe I should have read the manual. I guess I did the what NOT to do !!Partially removing the lens cap does NOT work !!


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quattroatl
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Nov 12, 2010 16:28 |  #145

titirez wrote in post #11269806 (external link)
Hello! I love this lens!

Great image!


5DII | 7D | 40D | 17-40 f/4L | 50 f/1.8 mk1 | 85 f/1.8 | 70-200 f/4L IS |100 f/2.8L IS Macro | 28-135 f/3.5-5.6 IS | Tokina 11-16 f/2.8 | 580EX II

  
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KayakPhotos
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Nov 13, 2010 14:49 as a reply to  @ quattroatl's post |  #146

Does this lens come with the new Sigma finish? I'm really considering it for UWA.


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SeverianTL
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84 posts
Joined Nov 2010
Location: Boston, MA
     
Nov 13, 2010 20:58 |  #147

I got this lens very early, basically as soon as I saw the glowing review from Photozone. At that time, early May, it had the old finish. I have no idea what finish it has now.


At first it looks like a horse's ass. But click it, and it turns into a unicorn! :cool:
5D3, 7D, EOS M. Sigma: 8-16mm, 18-50mm/2.8 macro, 35mm/1.4 A, 50mm/1.4, 50mm/1.4 A , 120-400mm. Canon: 8-15mm/4 Fisheye, 16-35mm/4 IS, 24-105mm/4 IS, 70-200mm/4 IS, 100mm/2.8 IS macro, EF-M 18-55 IS STM.

  
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titirez
Junior Member
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Location: Bucharest, Romania
     
Nov 14, 2010 01:21 |  #148

thanks quattroatl


5DmkII || T1i || Canon 70-200 F2.8 L IS || Sigma 8-16mm || 100 f2.8 usm || 430EX II + LightSphere ||
Www.fotografie-evenimente.ro (external link)

  
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jacobsen1
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Nov 17, 2010 14:25 as a reply to  @ titirez's post |  #149

SeverianTL wrote in post #11269263 (external link)
Just in case you might be thinking ... "Hmmm, I don't really need jacobsen1's MacGyver-like tricks (external link). I can just attach a 72mm filter directly to the lens cap adapter." Well, think again. You really do need to do something like Ben Jacobsen demonstrates in his video.

thanks, you're the man! So I'm 99.9% certain 4x5 (hitech) GNDs will work with this, now I just need to sell my 10-22 and order one, then get some parts to play with (spare cowl and whatever ring size fits it?)....


My Gear List

my sites:
benjacobsenphoto.com (external link) | newschoolofphotography​.com (external link)
GND buyers FAQ

FOR SALE: 5Dii RRS L-bracket, 430II, 12mm macro tube PM ME!

  
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nathan96
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Nov 17, 2010 17:23 |  #150

SeverianTL wrote in post #11267141 (external link)
Guess what, you can go smaller.
QUOTED IMAGE

Well done, thanks for the effort, we tried to get here in another thread but didn't

One question though (Ben you might want to wait before you jump in and buy it)

Did you use the piece of paper as shown (landscape) or its usual way (portrait) as GNDs wont work the way you have the piece of paper in this photo.

Now I have this lens myself I can test it tonight.


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Sigma 8-16mm f/4.5-5.6 DC HSM
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