Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-07-2013, 07:48 PM   #1
Moderator
Racer X 69's Avatar

Join Date: Jun 2010
Location: The Great Pacific Northwet
Photos: Gallery | Albums
Posts: 8,856
Sigma Lens Won't Focus

I just picked up a Sigma 4.5mm F2.8 EX DC Circular Fisheye lens. Since I like how ultra wide angle lenses create images I was eager to get it on the camera and try it out. I must be missing something, because it won't autofocus. I have tried every setting, checked and double checked, and just can't get the HSM thing to work.

Is there something I'm missing with setting up the camera? I really expected that I would be able to just mount the lens on the camera and start shooting.

I'm, using (well, at least attempting to use) it on my K10D. I usually shoot in manual mode, but I have tried every mode and setting the camera has and the lens refuses to focus automatically. I've turned the shake reduction off, selected all three focus modes on the front of the camera, i.e. "AF.S", "AF.C" and "MF", changed the metering modes, pressed the "AF" button so many times I think I'm gonna wear the paint off of it!

And yes I have the switch on the lens set to "AF". I did try switching it to "MF", then back, but still, nothing.

Did I just get stuck with a broken lens?

05-07-2013, 07:51 PM   #2
Pentaxian




Join Date: Nov 2011
Photos: Gallery | Albums
Posts: 3,615
At that focal length, do you even need to bother to focus it?
05-07-2013, 07:55 PM   #3
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,992
QuoteOriginally posted by Racer X 69 Quote
I just picked up a Sigma 4.5mm F2.8 EX DC Circular Fisheye lens. Since I like how ultra wide angle lenses create images I was eager to get it on the camera and try it out. I must be missing something, because it won't autofocus. I have tried every setting, checked and double checked, and just can't get the HSM thing to work.

Is there something I'm missing with setting up the camera? I really expected that I would be able to just mount the lens on the camera and start shooting.

I'm, using (well, at least attempting to use) it on my K10D. I usually shoot in manual mode, but I have tried every mode and setting the camera has and the lens refuses to focus automatically. I've turned the shake reduction off, selected all three focus modes on the front of the camera, i.e. "AF.S", "AF.C" and "MF", changed the metering modes, pressed the "AF" button so many times I think I'm gonna wear the paint off of it!

And yes I have the switch on the lens set to "AF". I did try switching it to "MF", then back, but still, nothing.

Did I just get stuck with a broken lens?
Do you have firmware >= v1.30?

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

05-07-2013, 08:38 PM   #4
Moderator
Racer X 69's Avatar

Join Date: Jun 2010
Location: The Great Pacific Northwet
Photos: Gallery | Albums
Posts: 8,856
Original Poster
QuoteOriginally posted by Adam Quote
Do you have firmware >= v1.30?
Looks like version 1.0.

So that may be the issue then?

05-07-2013, 08:40 PM   #5
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,992
QuoteOriginally posted by Racer X 69 Quote
Looks like version 1.0.

So that may be the issue then?
Yup, you need fw 1.3 or greater to use hsm.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

05-07-2013, 09:08 PM   #6
Moderator
Racer X 69's Avatar

Join Date: Jun 2010
Location: The Great Pacific Northwet
Photos: Gallery | Albums
Posts: 8,856
Original Poster
QuoteOriginally posted by Adam Quote
Yup, you need fw 1.3 or greater to use hsm.
Looks like that was it! Thank you Adam!

Have a donut and coffee on me, no, wait, have a beer!



Go ahead, pick one!

05-07-2013, 09:56 PM   #7
Yos
Veteran Member




Join Date: Jan 2013
Location: Stockholm
Photos: Gallery | Albums
Posts: 533
*Starts to drool*

Don't temp us! Trying to work here
05-08-2013, 06:02 AM   #8
Moderator
Racer X 69's Avatar

Join Date: Jun 2010
Location: The Great Pacific Northwet
Photos: Gallery | Albums
Posts: 8,856
Original Poster
QuoteOriginally posted by lytrytyr Quote
At that focal length, do you even need to bother to focus it?
It doesn't seem to have much range, that's for sure.

QuoteOriginally posted by Yos Quote
*Starts to drool*

Don't temp us! Trying to work here
Hey, if I had my way, we would have beer with every meal.



05-08-2013, 06:07 AM   #9
Banned




Join Date: Mar 2012
Location: Charleston & Pittsburgh
Photos: Albums
Posts: 1,683
QuoteOriginally posted by Racer X 69 Quote
Looks like that was it! Thank you Adam!

Have a donut and coffee on me, no, wait, have a beer!





Go ahead, pick one!
That's one of the best things I've seen since the BeerMeister
05-08-2013, 09:51 AM   #10
Moderator
Racer X 69's Avatar

Join Date: Jun 2010
Location: The Great Pacific Northwet
Photos: Gallery | Albums
Posts: 8,856
Original Poster
QuoteOriginally posted by Medium FormatPro Quote
That's one of the best things I've seen since the BeerMeister
Those are great, aren't they? I have all the stuff to build one except for the refrigerator. Taps, CO2 bottle, deposit kegs, and glasses. A whole case of heavy glass beer mugs.

And at my age, I need glasses!

05-08-2013, 01:03 PM   #11
Pentaxian
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 4,817
From the "First Drafts" column in today's Denver Post:

QuoteQuote:
May 13-19 is American Craft Beer Week, which frankly I thought was every week.
05-08-2013, 01:07 PM   #12
Moderator
Racer X 69's Avatar

Join Date: Jun 2010
Location: The Great Pacific Northwet
Photos: Gallery | Albums
Posts: 8,856
Original Poster
QuoteOriginally posted by Just1MoreDave Quote
From the "First Drafts" column in today's Denver Post:


Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, focus, k-mount, lens, mode, modes, pentax lens, sigma, sigma lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
35mm Flektogon f/2.4 Carl Zeiss - Lens Won't Focus at Infinity bigrex Troubleshooting and Beginner Help 2 03-07-2013 09:52 PM
My K20D doesn't won't focus Slowpoke Rodriguez Troubleshooting and Beginner Help 5 01-06-2013 08:04 PM
K20D won't go into AF on Sigma lens Pauld Troubleshooting and Beginner Help 6 06-23-2012 01:03 PM
Zoom lens won't focus to infinity - ideas? GibbyTheMole Pentax SLR Lens Discussion 5 10-22-2011 07:56 AM
Lens won't focus seeing well Troubleshooting and Beginner Help 6 12-15-2009 02:45 PM



All times are GMT -7. The time now is 06:21 PM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top