Sigma 30mm f/2.8
Old 04-05-2012   #1
Ken Ford
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Sigma 30mm f/2.8

I have one of these inbound. They seem to be a very nice quality lens for the price ($200US), from the web samples I've seen sharpness and contrast are improved over the kit lens. Back in the late 80s and the 90s before I got back into Leica, a very common walking around kit for me was one of my meterless Nikon F2 bodies with my 45/2.8GN - I like the FOV of the 45.

Anyone else here have or is getting one of these?
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Old 04-05-2012   #2
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ooh - interesting - I hadn't seen this, or their 19mm... will be keen to hear what you think of it...
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Old 04-05-2012   #3
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I'll report back - mine won't be here until sometime next week, probably late. The 30 is getting a lot of positive reviews from users, but the 19 seems like it may not be up to the same standards, at least in the eyes of the committed pixel peepers. I want to see how the 19 does in real life usage before I form an opinion.

I've already started lobbying Sigma for a 60/2.8 in the same DN lens line. I figure a 19/30/60 kit would make a lot of people happy!

This is fun - I'm gathering a small kit of AF lenses for this NEX-7, but also pursuing using some of my legacy glass, too. (I have piles of them!)
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Old 04-05-2012   #4
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I have had the 30/2.8 for a week and it is driving me mad. Would be interested to hear your views.

The 19/2.8 is too close to the 16/2.8 Sony lens. I would really like a 30/2 pancake, like Samsung NX series
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Old 04-05-2012   #5
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Could you be a little more specific about how it's driving you mad?
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Old 04-05-2012   #6
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Quote:
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Could you be a little more specific about how it's driving you mad?
+1.000452 (to beat minimum number of characters required to post)
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Old 04-05-2012   #7
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The lens hunts more than the either the kit lens or 16/2.8 when focusing and has a strange and very strong aperture mechanism that can be felt and heard, especially when switching between viewing images on screen (when the aperture closes down) and back to taking mode whent he aperture opens up. The delay is somewhere around 1 sec. I wonder whether I have a faulty lens or perhaps Sigma have reverse engineered the lens and have not got it quite right.
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Old 04-05-2012   #8
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Sounds more like a defective lens - I haven't seen many reports like yours. Sony shared the spec with other makers, no reverse engineering was involved.
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Old 04-05-2012   #9
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Quote:
Originally Posted by zuikologist View Post
The lens hunts more than the either the kit lens or 16/2.8 when focusing
The kit lens being the 18-55 zoom, I presume? The zoom is stabilized, the 16mm considerably shorter - both are (or at least should be) less vulnerable to camera movement in low light than a unstabilized 30mm. You'd better compare against the Sony macro to make sure the lens is at fault.
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Old 04-05-2012   #10
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Hmmm, didn't know about this lens at all. Suddenly the Nex-7 is more attractive. Any other non-sony e mount primes?
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Old 04-05-2012   #11
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Just the Sigma 19/2.8 released at the same time... so far!
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Old 04-05-2012   #12
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Quote:
Originally Posted by Ken Ford View Post
Sounds more like a defective lens - I haven't seen many reports like yours. Sony shared the spec with other makers, no reverse engineering was involved.
I would be interested in your opinion when your lens arrives Ken. I may be expecting too much or it is defective.
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Old 04-05-2012   #13
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Quote:
Originally Posted by sevo View Post
The kit lens being the 18-55 zoom, I presume? The zoom is stabilized, the 16mm considerably shorter - both are (or at least should be) less vulnerable to camera movement in low light than a unstabilized 30mm. You'd better compare against the Sony macro to make sure the lens is at fault.

Yes, the maligned 18-55, which I think is quite good.
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Old 04-05-2012   #14
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Anyone else here have or is getting one of these?
It's on the list but I'm not in a rush. I would really like to read a few reviews before I buy one.
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Old 04-05-2012   #15
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Quote:
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Just the Sigma 19/2.8 released at the same time... so far!
Hmmm, interesting... a 28.5mm lens? Are they considered good sigma or bad sigma products?
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Old 04-05-2012   #16
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I wanted to order both the 19 and the 30. The focal lengths are perfect for what I do with AF lenses. The Dutch Sigma site lists them but the major stores do not (yet).
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Old 04-05-2012   #17
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Hmmm, interesting... a 28.5mm lens? Are they considered good sigma or bad sigma products?
I think the jury is still out on the 19mm. Some people seem to have good examples, but others aren't as happy. I'm waiting for bench testing before I make up my mind - I'm not entirely sure that some of the less favorable results aren't due to bad technique.

Like I mentioned above, if Sigma would release a 60/2.8 to go with the 19 and 30 they'd clean up.
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Old 04-06-2012   #18
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Quote:
Originally Posted by Ken Ford View Post

Like I mentioned above, if Sigma would release a 60/2.8 to go with the 19 and 30 they'd clean up.
Kind of similar to Fuji's lineup for the XPro1. Someone's gotta make these lenses for the nex. Such a cool camera let down by sony's lack of good primes.
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Old 04-06-2012   #19
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I'm considering these lenses for m4/3--same ones, different mount. They are attractively priced and there's plenty of barrel to grab.

FWIW, these are the lenses from the DP1 and DP2. If you like those, you'll like these, optically speaking.
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Old 04-06-2012   #20
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I really am hoping Sigma will continue developing small moderate aperture DN series primes - IMO they're doing it right by making each of these in both m4/3 and NEX mounts. And if they can keep the same "look" across the whole series... yeah, baby.
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Old 04-06-2012   #21
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Quote:
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FWIW, these are the lenses from the DP1 and DP2. If you like those, you'll like these, optically speaking.
Thats interesting. Should be good then.
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Old 04-06-2012   #22
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Hmmm, interesting... a 28.5mm lens? Are they considered good sigma or bad sigma products?
You might want to check over at DPreview NEX forum. Photos, evaluation at various apertures.... central vs. peripheral.. etc. Generally, both the 30mm and 19mm have been well received.

Of course, the 24mm Ziess is first rate. I'm happy with my decision to go with the NEX-7, but my Biogons just didn't do it for me on the wide side. ( Zeiss ZM 35mm f/2.0 best of my selection)
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Old 04-06-2012   #23
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thanks for posting, i´m looking for a lens for my nex camera, i think this 30 2.8 is the same formula as the new sigma dp2 merrilll that would be pretty spectacular!!!
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Old 04-06-2012   #24
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great i´ve looked on flickr, really great!!!

That´s exactly waht i´ve been looking for!!!!

I´m buying one right away!!!
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Old 04-06-2012   #25
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I received the 19mm today, and, I must say, this little 19mm is getting me pretty excited for the 30mm that I have in the mail, since the 30 is the better of the two lenses. Even this 19mm lens is very sharp in the center at f2.8, and it looks only ok to me at f5.6 in the corners (could be some field curvature.) It's not a razor at the extreme corners, but it's probably usable with some adjustment in LR, and it's likely better at f8.

Here is an infinity shot at f5.6 on the NEX-7 with standard LR4 import settings, except that I activated CA correction. I didn't use a tripod with these, so take them with a grain of salt. Just a quick corner check.

full shot:
[

center crop:


very top right corner:
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Old 04-07-2012   #26
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Just ordered 19mm and 30mm from digital rev for $378 total (with free shipping). The lenses (especially 30mm) got some great reviews. This is will breath some life into my 5n which I stopped using for a while due to lack of reasonable priced quality primes. Getting two nice prime lenses for this price is awesome, 2.8 minimum aperture doesn't really bother me, 5n has great high iso plus being a mirrorless I can get away with slightly lower shutter speeds.
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Old 04-08-2012   #27
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Please post back later with how you like the 19mm! I wasn't considering one because it's a focal length I've never really grown to love, but I do admit it would be a nice pairing with the 30mm.

I agree with you about the f/2.8 minimum aperture not being a bother, especially as it seems the 30mm performs quite well wide open.
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Old 04-10-2012   #28
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So far so good with the 30. The first two I've processed:


222 S. Main by K J Ford, on Flickr


Hurry! by K J Ford, on Flickr
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Old 04-10-2012   #29
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Great shots, Ken, love the B&W!
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Old 04-11-2012   #30
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Nice shots.

How do you like the handling. Given my earlier comments, should Is end mine back as defective?


Quote:
Originally Posted by Ken Ford View Post
So far so good with the 30. The first two I've processed:


222 S. Main by K J Ford, on Flickr


Hurry! by K J Ford, on Flickr
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Old 04-11-2012   #31
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Focus may be marginally slower than the kit zoom. I haven't noticed any aperture wackiness - as a matter of fact, I've never seen the aperture open and close like you describe with either the 30 or my kit lens. The NEX views at the taking aperture, not in stop down mode - unless you have something enabled in your camera's setup that I don't?

The closest I can come to what you describe is in P or S mode by waving the camera around with the shutter half depressed so the aperture constantly changes. It does make noise when I do this, but it isn't objectionable.
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Old 04-11-2012   #32
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Red face

Thank you. I shall persevere, as I like the focal length and the lens itself is very good.

Quote:
Originally Posted by Ken Ford View Post
Focus may be marginally slower than the kit zoom. I haven't noticed any aperture wackiness - as a matter of fact, I've never seen the aperture open and close like you describe with either the 30 or my kit lens. The NEX views at the taking aperture, not in stop down mode - unless you have something enabled in your camera's setup that I don't?

The closest I can come to what you describe is in P or S mode by waving the camera around with the shutter half depressed so the aperture constantly changes. It does make noise when I do this, but it isn't objectionable.
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Old 04-11-2012   #33
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I'm not 100% sure, but there is an option that might affect this...

MENU -> [Setup] -[Live View Display]

Setting Effect ON (Default) will show live changes to exposure, WB, etc on the display.

Setting Effect OFF might operate the camera in stop-down mode, if I read the manual correctly.

Check to see what you have set, and try the other option to see if it helps.
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Old 04-11-2012   #34
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I have just received the 30mm. It's nice and seems to take sharp pictures wide open.

But do others hear the same rattling noise in the lens when the camera's off and rocked back and forth?
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Old 04-12-2012   #35
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But do others hear the same rattling noise in the lens when the camera's off and rocked back and forth?
I don't have the lens (yet?) but I've seen this described so many times it seems to be a feature, not a bug.
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Old 04-12-2012   #36
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It's mentioned in the manual. Nothing to worry about.
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Old 04-12-2012   #37
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[quote=Ken Ford;1855168 I haven't noticed any aperture wackiness - as a matter of fact, I've never seen the aperture open and close like you describe with either the 30 or my kit lens. The NEX views at the taking aperture, not in stop down mode - unless you have something enabled in your camera's setup that I don't?[/QUOTE]

It depends on the light that you're in. If the light is low, the lens will briefly open up when you AF and then quickly close before taking the picture.
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Old 04-12-2012   #38
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I'll have to try that! It would make sense, though - it might be a response from the camera to ensure enough light on the sensor for accurate focusing. If that's the case I would expect the same with the kit lens, and more frequently.
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Old 04-12-2012   #39
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Just got my 30mm and 19mm in the mail today. Didn't get a chance to take any "proper" photos but first impressions are all positive. The lenses are so nicely built, small and light and seem to suit my nex 5n perfectly. I reckon 30mm will be on most of the time, and 19mm is small and light and will fit in jacket pocket easily.
However, I wont be selling my 18-55 kit lens or 16mm as they can do some things sigma's can't.
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Old 04-13-2012   #40
Kent
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Join Date: Feb 2007
Location: Germany
Age: 45
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This lens is amazing!!

The AF is fast and spot-on (if the right AF-setting is chosen in the NEX-7).
The image quality is astonishing (esp. for a lens at the price!)
It looks great in black on the NEX-7.
Even with the "diva"-sensor of the NEX-7 is works together extremely well.

The Sigma EX 2.8/30 EN is a definite recommendation for every NEX user!!
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