Comments on: The Sigma 30mm F1.4 HSM Mini Review http://photofocus.com/2008/07/15/the-sigma-30mm-f14-hsm-mini-review-twip/ Fri, 10 Feb 2012 19:39:10 +0000 hourly 1 http://wordpress.com/ By: MikeW http://photofocus.com/2008/07/15/the-sigma-30mm-f14-hsm-mini-review-twip/#comment-5164 Wed, 04 Feb 2009 21:14:57 +0000 http://twipphoto.com/index.php/archives/617#comment-5164 I have this lens too, with my 450D. I got it off of Ebay and it had a noticeable front focusing issue. I sent it, along with my camera to Sigma, and they fixed it in a week. Works perfectly for me now!! :)

]]> By: MikeW http://photofocus.com/2008/07/15/the-sigma-30mm-f14-hsm-mini-review-twip/#comment-5165 Wed, 04 Feb 2009 21:14:57 +0000 http://twipphoto.com/index.php/archives/617#comment-5165 I have this lens too, with my 450D. I got it off of Ebay and it had a noticeable front focusing issue. I sent it, along with my camera to Sigma, and they fixed it in a week. Works perfectly for me now!! :)

]]> By: AndyK http://photofocus.com/2008/07/15/the-sigma-30mm-f14-hsm-mini-review-twip/#comment-5162 Fri, 22 Aug 2008 08:03:13 +0000 http://twipphoto.com/index.php/archives/617#comment-5162 >>>>>>>
I think the front focus/back focus thing is mostly user error. At f/1.4 your depth of field is so narrow, any movement between focus lock and shutter release can make things “soft”. (technique can shorten that time and get you better results)
<<<<<<<

I recently purchased a Sigma 30mm f1.4 to go with Olympus, and AF appears to be front-focus from noticeably @ f1.4 to mildly @ f2.8, while MF appears to be just fine. Tested on a tripod to minimize movement between focus lock and shutter release, but no success. Brought the lens back to the store for help, and now both the lens and the camera are on their way to Sigma service center for lens calibration. Guy at the store told me that I am not the only one having AF problems with this particular lens, and that the AF issue usually goes away after calibration, so I have my fingers crossed.

]]> By: AndyK http://photofocus.com/2008/07/15/the-sigma-30mm-f14-hsm-mini-review-twip/#comment-5163 Fri, 22 Aug 2008 08:03:13 +0000 http://twipphoto.com/index.php/archives/617#comment-5163 >>>>>>>
I think the front focus/back focus thing is mostly user error. At f/1.4 your depth of field is so narrow, any movement between focus lock and shutter release can make things “soft”. (technique can shorten that time and get you better results)
<<<<<<<

I recently purchased a Sigma 30mm f1.4 to go with Olympus, and AF appears to be front-focus from noticeably @ f1.4 to mildly @ f2.8, while MF appears to be just fine. Tested on a tripod to minimize movement between focus lock and shutter release, but no success. Brought the lens back to the store for help, and now both the lens and the camera are on their way to Sigma service center for lens calibration. Guy at the store told me that I am not the only one having AF problems with this particular lens, and that the AF issue usually goes away after calibration, so I have my fingers crossed.

]]> By: troperocosmico http://photofocus.com/2008/07/15/the-sigma-30mm-f14-hsm-mini-review-twip/#comment-5159 Mon, 21 Jul 2008 02:53:03 +0000 http://twipphoto.com/index.php/archives/617#comment-5159 I love this lens. For the price you get a deal. Sure it take a while to focus…that’s why I always select manually the focus area on my d40, but you get what you paid for. Excellent first addition if you are stuck with the usual @#&$ 18-55mm that comes with the camera itself. And also two things already mentioned by others (I think), number one D40 doesn’t have autofocus for the 50mm f/1.8 or f/1.4, and number two with a crop factor of 1.5 on the d40 and most nikon dslrs well the 30mm gives us the perspective of a 50mm. So there. Thanks and hopefully someone will find this useful.

]]> By: troperocosmico http://photofocus.com/2008/07/15/the-sigma-30mm-f14-hsm-mini-review-twip/#comment-5160 Mon, 21 Jul 2008 02:53:03 +0000 http://twipphoto.com/index.php/archives/617#comment-5160 I love this lens. For the price you get a deal. Sure it take a while to focus…that’s why I always select manually the focus area on my d40, but you get what you paid for. Excellent first addition if you are stuck with the usual @#&$ 18-55mm that comes with the camera itself. And also two things already mentioned by others (I think), number one D40 doesn’t have autofocus for the 50mm f/1.8 or f/1.4, and number two with a crop factor of 1.5 on the d40 and most nikon dslrs well the 30mm gives us the perspective of a 50mm. So there. Thanks and hopefully someone will find this useful.

]]> By: LapTop006 http://photofocus.com/2008/07/15/the-sigma-30mm-f14-hsm-mini-review-twip/#comment-5161 Sat, 19 Jul 2008 15:14:41 +0000 http://twipphoto.com/index.php/archives/617#comment-5161 I have this lens right next to me on my 20D, it’s my standard “inside” lens. Good lens, AF speed is a little slow, but other then that I’m pretty happy.

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