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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 29 Jan 2013 (Tuesday) 10:44
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New Sigma 30mm f1.4 Art

 
dnauer
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Apr 19, 2013 21:29 |  #211

mwsilver wrote in post #15846193 (external link)
Thus for many photos its not a big issue unless your prints are very large or you are cropping a lot. If you don't view or print at large sizes and don't crop much, you might have the same issue and not realize it.

That is always possible. I print up to 13x19 (using my Pixma pro9000 that I bought with my new 40D as a package) and of course I do crop sometimes -- but it is hard to claim I do it often and repeatedly -- so I could be missing the cases where it is "off" because I wasn't cropping, enlarging, or shooting at f1.4. Not sure. Heck, it might be because I'm at 10.1 mp resolution instead of your 18 mp -- but I haven't had a case where I've said "Huh. That shot looks soft - wonder what happened". Maybe I am just lucky in one of those ways :-)




  
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SouthTune
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Apr 20, 2013 04:38 |  #212

Just found the following review...
http://lcap.tistory.co​m …SIgma-Art-30mm-f14-Review (external link)


Canon EOS 60D, EF-S 15-85 IS

  
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mwsilver
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Apr 22, 2013 01:48 |  #213

dnauer wrote in post #15847186 (external link)
That is always possible. I print up to 13x19 (using my Pixma pro9000 that I bought with my new 40D as a package) and of course I do crop sometimes -- but it is hard to claim I do it often and repeatedly -- so I could be missing the cases where it is "off" because I wasn't cropping, enlarging, or shooting at f1.4. Not sure. Heck, it might be because I'm at 10.1 mp resolution instead of your 18 mp -- but I haven't had a case where I've said "Huh. That shot looks soft - wonder what happened". Maybe I am just lucky in one of those ways :-)

Many have talked about the old 30mm's problems achieving sharp focus on very small targets, and about the need for strong contrast for the AF to be effective. As an example, if I take a picture of a neutral colored vase from 7 to 8 feet away, with the target a small pattern on it, The pattern will only be really sharp, when viewed zoomed in on the LCD, perhaps 60-70% of the time. If I put a dark piece of card stock against the vase and focus on the edge between the dark card stock and the lighter colored vase, just a couple of inches away from the pattern, it is now sharp as a tack 90+% of the time, I've tried this over and over again in different situations and it seems to hold true. Consistent AF with the old 30mm seems to require a target with a greater amount of contrast than many other lenses.


Mark
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aquaforester
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Apr 22, 2013 15:17 |  #214

Has anyone been shooting with this outdoors in good light? Even stopped down to 3.5 or so I'm having a hard time getting something decent OOC. Is that normal for a lens like this?


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bobbyz
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Apr 22, 2013 15:18 |  #215

aquaforester wrote in post #15855625 (external link)
Has anyone been shooting with this outdoors in good light? Even stopped down to 3.5 or so I'm having a hard time getting something decent OOC. Is that normal for a lens like this?

I would say something wrong, either the lens or the technique. Why not post some shots?


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mwsilver
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Apr 22, 2013 15:22 |  #216

aquaforester wrote in post #15855625 (external link)
Has anyone been shooting with this outdoors in good light? Even stopped down to 3.5 or so I'm having a hard time getting something decent OOC. Is that normal for a lens like this?

Could you be a bit more specific in your description and, as suggested, provide examples?


Mark
Canon 7D2, 60D, T3i, T2i, Sigma 18-35 f/1.8, 30 f/1.4. Canon EF 70-200 L f/4 IS, EF 35 f/2 IS, EFs 10-18 STM, EFs 15-85, EFs 18-200, EF 50 f/1.8 STM, Tamron 18-270 PZD, B+W MRC CPL, Canon 320EX, Vanguard Alta Pro 254CT & SBH 250 head. RODE Stereo Videomic Pro, DXO PhotoLab Elite, ON1

  
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aquaforester
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Apr 22, 2013 15:42 |  #217

Sorry for being so vague. I'll try to post some pics later tonight.


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Xyclopx
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Apr 22, 2013 16:38 as a reply to  @ aquaforester's post |  #218

hi guys,

i just got this lens and it is incredible!!! it's even sharp at 1.4! amazing. auto focus is a bit slower than i am used to from canon's lenses, and it does seem to miss focus more often than other L-lenses i have tried, but still plenty fine.

my question is: my lens requires a micro focus adjustment of +5 on my 5d3. do you guys think i should keep it and just buy the dock to correct it? or return?

i'm having a hard time cause i am starting to hear some negative reviews of this lens in respect to auto focus. my lens seems to work perfectly fine after correcting with ma. so, i'm thinking no need to roll the dice uneccessarily.

what do you guys think?

thanks. :)

(btw, did i mention this lens is sharp at 1.4!? wow.)


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BrickR
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Apr 22, 2013 16:50 |  #219

Xyclopx wrote in post #15855887 (external link)
hi guys,

i just got this lens and it is incredible!!! it's even sharp at 1.4! amazing. auto focus is a bit slower than i am used to from canon's lenses, and it does seem to miss focus more often than other L-lenses i have tried, but still plenty fine.

my question is: my lens requires a micro focus adjustment of +5 on my 5d3. do you guys think i should keep it and just buy the dock to correct it? or return?

i'm having a hard time cause i am starting to hear some negative reviews of this lens in respect to auto focus. my lens seems to work perfectly fine after correcting with ma. so, i'm thinking no need to roll the dice uneccessarily.

what do you guys think?

thanks. :)

(btw, did i mention this lens is sharp at 1.4!? wow.)

You sure you're in the right thread? This is the 30 1.4 thread, it is an APS-C lens, not the FF lens which is the 35 1.4


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Xyclopx
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Apr 22, 2013 16:54 |  #220

BrickR wrote in post #15855927 (external link)
You sure you're in the right thread? This is the 30 1.4 thread, it is an APS-C lens, not the FF lens which is the 35 1.4

oh shoot! my bad. sorry, you're right. this is the 35 not 30. please disregard.


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jrbdmb
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Apr 23, 2013 06:45 |  #221

I got my Sigma 30 Art back yesterday afternoon - first impression is that the lens is now behaving much better, no obvious front focusing. I'll need to recheck the MA and then try a few shots that were giving me trouble before - hopefully I can post something before the weekend.


Tools: 70D, 10-22, Tamron 24-70 VC, 70-300L, 135 f2L

  
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RTPVid
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Apr 23, 2013 14:22 |  #222

Sigma 30mm f/1.4 "A" video review with sample pictures available. (external link)


Tom

  
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AHeroToZero
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Apr 23, 2013 14:40 |  #223

I've recently got this lens, and it seems fine to me. I've been playing around with it a lot, and on the first day I got it I couldn't focus it properly because I didn't realize how thin the DOF is. I started using AI servo auto focusing and that helped a little bit.

I shoot on a 60D, and from my experiences with this lens, out of the 9 focus points to choose from, interestingly, the top one front focuses.

Anyway, here are some of my sample images, Post-processed. Take in mind, i'm pretty noobish and experiment a lot in lightroom. :)

f2.0

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http://i103.photobucke​t.com …2030mm%20ART/IM​G_7190.jpg (external link)


f3.5

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f1.4 focused on the protruding plant slightly to the right

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f1.4

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I hope this helps. :D



  
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Lenshead
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Apr 29, 2013 17:42 |  #224

New Review Posted:
http://www.lensrentals​.com …-vs-sigma-30mm-f1-4-ex-dc (external link)




  
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Yogi ­ Bear
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Apr 29, 2013 18:29 |  #225

I always enjoy Roger's reviews, but especially this one because it compares the old 30mm to the new "Art" version.

Thanks for posting this link, Lenshead!

Yogi


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