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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 13 Jan 2007 (Saturday) 15:22
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Sigma 30mm f/1.4 (my first Sigma lens)

 
mijbril
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Jan 13, 2007 15:22 |  #1

Got it late Thursday & hmmmm, some focussing issues very evident...... I think my copy needs to go in for some calibration work..... (I compared it shortly after with my Canon 50mm f/1.4 & the Canon was spot on perfect)

Not too stressed at the moment though, I'll send it in Monday, just hope that Kennedy do not keep it too long!!!!

Glad that I had read of this issue with the lens on the forums first though, otherwise a little more panic would have set in, hehe.


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elader
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Jan 13, 2007 16:12 |  #2

do you see any isseues when shooting real subjects?


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condyk
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Jan 13, 2007 16:14 |  #3

Clearly front focussing so I hope things work out well with the fix. It's a lovely lens.


https://photography-on-the.net …/showthread.php​?t=1203740

  
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mijbril
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Jan 13, 2007 16:24 |  #4

elader wrote in post #2535392 (external link)
do you see any isseues when shooting real subjects?

Yeah, I was playing with it on the Friday afternoon at work & one of my (pretty) co-workers wanders by, so I fired off a shot of her with what I thought was spot on focus (her comment, "I hope there is no film in that camera". My reply, "no, no film at all, it's digital", hehe), when I got home though it was very out of focus.

So then a test on the Saturday revealed the front focussing issue.... sigh.... but no long term problem I think :)


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steved110
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Jan 13, 2007 16:31 as a reply to  @ mijbril's post |  #5

It's well worth sending it in to get re calibrated. just a real pain in the rear that so many people have to go through the hassle of having this done.

When i bought mine I was of the opinion that this issue had been resolved - I have to admit if I had known it was not, i would not have been very keen to risk it. the focusing issue has probably lost sigma a lot of potential customers on this forum, but worse than that, it has probably deprived many of our members of the joys of using such a wonderful fast prime.

Persevere, you'll be glad you did, and be sure to let us know how things pan out for you.


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Jman13
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Jan 13, 2007 16:36 |  #6

Yeah, mine was front-focusing pretty severely as well. I was going to get it calibrated, but chose instead to take advantage of double rebates and get my 30D and the 28 f/1.8.

The 30 is a fantastic lens once calibrated, so I'd send it in. For me, though, it wasn't worth it with the 30D purchase as well.


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mikechong
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Jan 14, 2007 09:31 |  #7

May I ask where in Australia you are in? And please report on your calibration experience when you get it back :).

I bought the 30mm f/1.4 about 2 months ago. While no where as severe as yours, I find mine is very slightly backfocussing. I'm still not fully convinced whether it's the lens, or whether it's just my 350D's autofocus tolerance...
I was gonna drop it into CR Kennedy (Sydney), but they said it would take many weeks (can't remember how many the said exactly). I wanted to take it on my holiday trip, so decided to hang on to it. I'll return back to Aus next week and am thinking of dropping it off to calibrate.


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farrukh
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Jan 14, 2007 09:56 |  #8

Congrats. its worth to calibrate it.
Mine is sent back for the fix also


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Jakkin
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Jan 14, 2007 11:07 |  #9

Looks like third party lenses all have (or large portion of them) this problem, my Sigma 17-70mm was sent back on Friday.


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condyk
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Jan 14, 2007 11:08 |  #10

No true ... I have the 30mm and the 17-70mm and both perfect AFAIC.


https://photography-on-the.net …/showthread.php​?t=1203740

  
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ed ­ rader
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Jan 14, 2007 11:12 as a reply to  @ condyk's post |  #11

tsk tsk.

another thread of siggie woe.

will they never learn :rolleyes: ?

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Jakkin
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Jan 14, 2007 11:15 |  #12

Who are "they"?


Canon 30D
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ed ­ rader
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Jan 14, 2007 11:20 |  #13

Jakkin wrote in post #2539427 (external link)
Who are "they"?

they who ignore history.

ed rader


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5D4, 80d, 16-35L F4 IS, 24-70L II, 70-200L F4 IS II, 100-400L II, sigma 15 FE, sigma 14 f1.8 art, tc 1.4 III, 430exII, gitzo 3542L + markins Q20, gitzo GT 1545T + markins Q3T, gitzo GM4562

  
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Jman13
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Jan 14, 2007 11:26 |  #14

Most Sigmas seem to be fine in this regard, but the 30 in particular seems to be particularly bad in focus tolerance. When fixed, it's amazing from what I hear.

I don't regret getting the 28, as it's a great lens, though occasionally I wish I still had f/1.4.


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---------------
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condyk
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Jan 14, 2007 11:27 |  #15

So speaks the man who owns a 24-70mm L ... the most problematic lens reported here over the last 18 months. Everything else is a mere fad in comparision to the consistent critique that fat boy lens gets ;-)a

Anyone can do a search and see I am right. Go ahead y'all :lol: :lol: but really who cares about this stuff when all people need to do is send it back or get a fix, whether it be Canon or Sigma?


https://photography-on-the.net …/showthread.php​?t=1203740

  
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Sigma 30mm f/1.4 (my first Sigma lens)
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