Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-15-2010, 12:54 PM   #16
Veteran Member




Join Date: Jun 2009
Photos: Albums
Posts: 1,679
QuoteOriginally posted by Clinton Quote
Hope you get a better response than I did. Sigma gave me the impression they didn't care. Pentax support gave me the statement that sigma should have tested it first.
so, as usual, the customer gets the shaft after opening the wallet...they both got our cash so neither one gives a rat's ass.

07-15-2010, 02:55 PM   #17
Veteran Member
Derridale's Avatar

Join Date: Jan 2008
Location: Brisbane, Australia
Posts: 412
Not so sure about being "shafted"... what does it matter?

My 8-16 is not recognised at 8mm by my two K20D bodies - it shows up as "0mm" in Aperture. That's not a problem - I just need to remember that 0mm is 8mm. It's a tiny annoyance.

I've only had my 8-16 for a few days, but the main thing I've found so far (and I may well be wrong when I try it in more situations) is that the extreme wide angle confuses the exposure meter somewhat, and if there is ANY sky, for example, in the shot, then the shot tends to be underexposed. I've tried it with full metering and spot metering, but it comes out about the same. I need to lift the shadows in Aperture in PP.

I think this is inherent in being such an extreme wide angle view - simply too much information for the exposure meter to average out.

However, as I said, I've only had the thing for a couple of days so far, so I've still got to get the hang of its personality and foibles, like any lens. It has also been fairly dull here since I got it, so I haven't yet tried it in full sunlight.
07-16-2010, 12:57 AM   #18
Site Supporter
GeneV's Avatar

Join Date: Oct 2008
Location: Albuquerque NM
Photos: Albums
Posts: 9,761
So one turns SR off at 8mm. It probably isn't helping a whole lot at these FLs anyway.
07-16-2010, 08:11 AM   #19
Veteran Member




Join Date: Nov 2009
Location: Hong Kong
Posts: 1,352
I'm not noticing SR doing anything unusual at 8mm.

07-16-2010, 10:00 PM   #20
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
I guess Pentax would have to come up with a firmware update.
07-17-2010, 10:20 AM   #21
Site Supporter
Clinton's Avatar

Join Date: Feb 2010
Location: Salt Lake City, UT
Photos: Gallery | Albums
Posts: 1,800
QuoteOriginally posted by Pentaxor Quote
I guess Pentax would have to come up with a firmware update.
I wish they would, but I was placed under the impression that update needed to be driven by Sigma contacting them, not me.

In any event, I strongly encourage everyone who buys this lens to contact both sigma support about this issue, and pentax support about it as well. The more of us that squeak, the more likely we'll see a fix.
07-17-2010, 02:44 PM   #22
Pentaxian
Aegon's Avatar

Join Date: Jan 2008
Location: Portland, OR
Posts: 1,410
I have no inside knowledge. And I admit that there is a good chance that the following statement is entirely false.

But there is a possibility that KAF doesn't support anything under 10mm in the serial protocol.
And there is a possibility that you can't really change the protocol without breaking something else, or at least affecting backward compatibility.

Just throwing this out there. No inside info, and I can't find a specification for the protocol so I can't check if this is true (any specification is probably held tightly and probably reversed engineered by Sigma anyway).
07-18-2010, 02:19 AM   #23
New Member




Join Date: Jul 2010
Posts: 3
An other problem is that the name of the lens is not recognize in exif. No name in Lightroom, in Photome (an excellent tool for Exifs), only the ID (Id: 8 18).
There is a lot of work !


07-18-2010, 06:11 AM   #24
Site Supporter
GeneV's Avatar

Join Date: Oct 2008
Location: Albuquerque NM
Photos: Albums
Posts: 9,761
Lens and aperture recognition is a bit of a mystery to me, and I have heard various theories as to where the issues are. My venerable DA 18-55 II is recognized less than half the time on some of my bodies. The even older Sigma 17-35 DG EX is recognized as a Tamron in a completely different focal length. Whether the camera internally recognizes the lens and FL may have nothing to do with what you see in EXIF.
07-18-2010, 04:38 PM   #25
Senior Member
ManhattanProject's Avatar

Join Date: Apr 2010
Location: Midwest
Photos: Gallery
Posts: 207
It was the DA*16-50 or the Sigma 8-16... and I ordered the sigma! Should have mine this week. It seems not too many people own this puppy yet.
07-18-2010, 06:10 PM   #26
Veteran Member
alohadave's Avatar

Join Date: Jan 2008
Location: Quincy, MA
Photos: Gallery | Albums
Posts: 2,024
QuoteOriginally posted by gwinru Quote
An other problem is that the name of the lens is not recognize in exif. No name in Lightroom, in Photome (an excellent tool for Exifs), only the ID (Id: 8 18).
There is a lot of work !
That will change as software updates are released. It's pretty common for lenses to not be recognized in one version, then recognized in the next update.
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!
copy, k-mount, lens, pentax lens, sigma, sigma 8-16mm, slr lens, week
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
What about Sigma 8-16mm?? mikiresty Pentax SLR Lens Discussion 5 06-19-2010 04:00 AM
For Sale - Sold: Sigma 180mm f3.5 macro, Sigma 16mm f2.8 Filtermatic Fisheye, K20D, K100D Super jfirneno Sold Items 16 02-05-2010 06:46 AM
Got Myself A Good Find Earlier And Cheaper Than Expected... vinzer Pentax Film SLR Discussion 15 12-17-2008 09:00 AM
A change up from a earlier picture Jimbo Post Your Photos! 3 07-17-2008 10:10 AM
started smoking this week.. Spaceguy1 Post Your Photos! 3 03-11-2008 06:18 PM



All times are GMT -7. The time now is 06:54 AM. | 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