Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-30-2008, 11:27 AM   #16
MrA
Senior Member




Join Date: Mar 2008
Location: England UK
Posts: 211
I have the Sigma Super-Wide II 24mm, but having not been in slr photography for so long, am confused by one thing - see pictures someone uploaded of the lens at
Sigma Superwide-II 24/2.8 on Flickr - Photo Sharing!

- what are the diagonal markings for? What is the significance of the 22-16-11-8-R-4? I'm quite happily using the manual aperture and focus ring and all is working, but am I missing something? I mean, it looks like alignments for focus at different apertures, say, except 22 appears twice...

04-30-2008, 11:39 AM   #17
Site Supporter
maxwell1295's Avatar

Join Date: Jan 2008
Location: Long Island, New York
Photos: Gallery
Posts: 2,704
Here's a Photozone.de review of the Sigma 24mm Super Wide. This is the AF version of this lens, but I'm pretty sure the optics are the same.

Sigma AF 24mm f/2.8 macro (Pentax K) - Photozone Review / Lab Test Report


Photodo rating: Sigma AF 24mm f/2.8 MTF data
04-30-2008, 01:34 PM   #18
Veteran Member
Miserere's Avatar

Join Date: Sep 2007
Location: Boston
Photos: Gallery
Posts: 1,994
QuoteOriginally posted by MrA Quote
I have the Sigma Super-Wide II 24mm, but having not been in slr photography for so long, am confused by one thing.
- what are the diagonal markings for? What is the significance of the 22-16-11-8-R-4? I'm quite happily using the manual aperture and focus ring and all is working, but am I missing something? I mean, it looks like alignments for focus at different apertures, say, except 22 appears twice...
Go here, and scroll down to the section titled Focusing on the Hyperfocal Distance; that should clear things up for you.

And here's another nice article on hyperfocal focusing.

Last edited by Miserere; 04-30-2008 at 01:47 PM.
04-30-2008, 02:19 PM   #19
Veteran Member




Join Date: Feb 2008
Location: Toronto
Posts: 3,915
basically hyperfocal focusing allows the background and foreground to be sharp in your photo

05-01-2008, 01:38 PM   #20
Senior Member
Trawlerman's Avatar

Join Date: Feb 2007
Location: Hull, Yorkshire, UK
Photos: Gallery | Albums
Posts: 210
Original Poster
QuoteOriginally posted by MrA Quote
I have the Sigma Super-Wide II 24mm, but having not been in slr photography for so long, am confused by one thing - see pictures someone uploaded of the lens at
Sigma Superwide-II 24/2.8 on Flickr - Photo Sharing!


Those are the pics I uploaded that I got from the seller.

The lens came in the post this morning and it's a beauty. I've not been able to get out yet as I'm working on the night shift this week but hopefully I will get out and shoot some at the weekend.

The Sigma 24/2.8 is also joined by an SMC-M 85/2.0 that i've been hankering after for some time.
05-01-2008, 02:49 PM   #21
Veteran Member
Miserere's Avatar

Join Date: Sep 2007
Location: Boston
Photos: Gallery
Posts: 1,994
QuoteOriginally posted by Trawlerman Quote
Those are the pics I uploaded that I got from the seller.
It's a small world, huh? I was just going over your equipment pics yesterday and was reminded that I might want a Tokina 19-35mm

I look forward to your views on the Sigma 24mm as, from your Flickr pics, I gather that you know what you're doing behind the camera.
05-01-2008, 02:52 PM   #22
Veteran Member
jsherman999's Avatar

Join Date: Dec 2007
Photos: Gallery
Posts: 8,228
QuoteOriginally posted by Trawlerman Quote
The Sigma 24/2.8 is also joined by an SMC-M 85/2.0 that i've been hankering after for some time.
Congrats, you'll love it.


.
05-02-2008, 11:02 AM   #23
MrA
Senior Member




Join Date: Mar 2008
Location: England UK
Posts: 211
QuoteOriginally posted by Miserere Quote
Go here, and scroll down to the section titled Focusing on the Hyperfocal Distance; that should clear things up for you.

And here's another nice article on hyperfocal focusing.
Many thanks. Makes perfect sense.

05-02-2008, 09:49 PM   #24
Veteran Member
Abbazz's Avatar

Join Date: Nov 2006
Location: Myanmar
Posts: 516
Here are some pictures taken with the Sigma 24/1.8 EX DG. No sharpening applied.

Taken at F/1.8:


Taken at F/1.8:


Taken at F/5.6:


Taken at F/5.6:


100% crop from previous picture:


Cheers!

Abbazz
05-04-2008, 01:05 PM   #25
Veteran Member
Miserere's Avatar

Join Date: Sep 2007
Location: Boston
Photos: Gallery
Posts: 1,994
QuoteOriginally posted by Abbazz Quote
Here are some pictures taken with the Sigma 24/1.8 EX DG. No sharpening applied.

Cheers!

Abbazz
Before, I really wanted this lens. Now I really want it.

Pic. #2 is the reason why I want it. Close focus at a wide(ish) angle with a large aperture is a look I love, especially with people. Thanks for the photos, Abbazz!
05-05-2008, 12:41 PM   #26
Senior Member
Trawlerman's Avatar

Join Date: Feb 2007
Location: Hull, Yorkshire, UK
Photos: Gallery | Albums
Posts: 210
Original Poster
I think my Sigma 24/2.8 might be a duffer.

Look at this .............




Nice and sharp in the middle but the outside looks like it has camera shake? Is it me or does this look crap? EXIF says 1/250th but no aperture setting recorded. I would have thought that at that speed, shake wouldn't be a problem.
05-05-2008, 01:45 PM   #27
Forum Member




Join Date: Dec 2006
Photos: Gallery
Posts: 64
That does look like a bum lens. Also not quite sure what you can do about, since it is definitely on the old side. Last I checked, Sigma couldn't service my 24/2.8 (bought new in the early 90s)...

Ah well. That turned me into a super happy 24/1.8 owner. That's a very fine lens, that...
05-05-2008, 02:01 PM   #28
MrA
Senior Member




Join Date: Mar 2008
Location: England UK
Posts: 211
There seem to be a number of ebayers selling lenses "on behalf of their brother" or somesuch, claiming to be ignorant of matters photographic. A small part of me suspects this is why.
05-05-2008, 02:13 PM   #29
Site Supporter
germar's Avatar

Join Date: Apr 2007
Location: Austin Texas
Photos: Gallery
Posts: 728
Wow, Trawlerman, that's a SHAME. There's clearly a huge flaw in that lens. My Superwide II is tack sharp across the image area. I would say the lens was misrepresented as that's an amazingly obvious flaw.

Was it an ebay purchase? Man, I'd get in contact with the seller and try to send that lens back.

Terrible shame.

germar
05-05-2008, 02:55 PM   #30
Veteran Member
Miserere's Avatar

Join Date: Sep 2007
Location: Boston
Photos: Gallery
Posts: 1,994
QuoteOriginally posted by germar Quote
Wow, Trawlerman, that's a SHAME. There's clearly a huge flaw in that lens. My Superwide II is tack sharp across the image area. I would say the lens was misrepresented as that's an amazingly obvious flaw.

Was it an ebay purchase? Man, I'd get in contact with the seller and try to send that lens back.

Terrible shame.

germar
I agree on all accounts! Check out my flower pic posted some days ago; it was not cropped and you can tell from the bokeh that nothing funny is going on in the edges.

I'm so sorry for you, mate! I hope this doesn't put you off trying to get another copy of this fine lens (after you get your money back!).
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!
24mm, k-mount, lenses, pentax lens, sigma, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Sigma 24mm "Super-Wide" f2.8 Autofocus Prime Lens Youngster Sold Items 1 09-18-2008 12:56 AM
For Sale - Sold: FS: Pentax K 24mm f2.8 Prime Lens Youngster Sold Items 1 03-16-2008 11:54 AM



All times are GMT -7. The time now is 12:12 AM. | See also: NikonForums.com, CanonForums.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