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

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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do you see any isseues when shooting real subjects?

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

elader wrote in post #2535392
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

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.

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.

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.

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

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

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

tsk tsk.

another thread of siggie woe.

will they never learn ?

ed rader

Who are "they"?

Jakkin wrote in post #2539427
Who are "they"?

they who ignore history.

ed rader

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.

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

Anyone can do a search and see I am right. Go ahead y'all 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?