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

jacobsen1 wrote in post #11265078
^ 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/
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?

this part specifically:

jacobsen1 wrote in post #11265078
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.

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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Just in case you might be thinking ... "Hmmm, I don't really need jacobsen1's MacGyver-like tricks. 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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Hello! I love this lens!

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SeverianTL wrote in post #11269263
Just in case you might be thinking ... "Hmmm, I don't really need jacobsen1's MacGyver-like tricks. 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.

Same scenario with filter.

@ 8mm w/o filter

@ 8mm with filter

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 ?

scorpio_e wrote in post #11272231
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.

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.

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 !!

titirez wrote in post #11269806
Hello! I love this lens!

Great image!

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

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.

thanks quattroatl

SeverianTL wrote in post #11269263
Just in case you might be thinking ... "Hmmm, I don't really need jacobsen1's MacGyver-like tricks. 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?)....

SeverianTL wrote in post #11267141
Guess what, you can go smaller.

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.