Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-27-2008, 11:02 AM   #1
Senior Member




Join Date: Apr 2008
Location: Barcelona, Spain
Posts: 264
16mm vs 10mm

Hello.

I own a Pentax 16-45mm and I really like wide angle pictures. Sigma 10-20mm seems an excellent choice but I just was wondering how much different is 10mm (Sigma) against 16mm (Pentax). Would it be so different and would it be so much wide 10mm than 16mm?

It would be great to have a comparison on a picture so I can make my mind and then I could decide if saving money for the Sigma is interesting or not.

Thank you.

05-27-2008, 11:02 AM   #2
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,610
10mm is much wider than 16mm

you'll get about 20-25 more workable degrees of field of view from dropping down to 10mm from 16


the higher you go up in focal length, the less of an impact it has on field of view from a utilitarian perspective, the lower, the greater the visual impact

Last edited by Gooshin; 05-27-2008 at 11:08 AM.
05-27-2008, 11:49 AM   #3
Veteran Member




Join Date: Jul 2007
Location: Helsinki
Photos: Gallery
Posts: 5,400
I have both Pentax 16-50 and Sigma 10-20 and they complement each other nicely. 10mm is really a lot wider than 16mm.
05-27-2008, 12:05 PM   #4
Veteran Member
Ben_Edict's Avatar

Join Date: Jul 2007
Location: SouthWest "Regio"
Photos: Albums
Posts: 3,309
The difference of just over 100 deg and about 84 deg in image angle is very significant. At these short focal lengthes any single mm counts and can be noticed.

Ben

05-27-2008, 12:25 PM   #5
baw
Senior Member




Join Date: Dec 2006
Location: Neterlands
Posts: 189
QuoteOriginally posted by cooldude14es Quote
It would be great to have a comparison on a picture so I can make my mind and then I could decide if saving money for the Sigma is interesting or not.
This Tamron tool gives a reasonable idea of the effect of different focal lengths.
05-27-2008, 12:41 PM   #6
Not Registered
Guest




10mm is also much more challenging (and funny) in terms of composition.
05-27-2008, 01:48 PM   #7
Senior Member




Join Date: Apr 2008
Location: Barcelona, Spain
Posts: 264
Original Poster
QuoteOriginally posted by baw Quote
This Tamron tool gives a reasonable idea of the effect of different focal lengths.
Thanks for this tool.

And thank you everybody else for your answers.

Has anybody considered this lens? It is still not avalaible for Pentax mount but maybe soon. It seems really interesting also.

Tokina 11-16mm

Somebody on another forum gave me this link to read a review about it.

Thanks.

05-27-2008, 02:17 PM   #8
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,610
QuoteOriginally posted by cooldude14es Quote
Thanks for this tool.

And thank you everybody else for your answers.

Has anybody considered this lens? It is still not avalaible for Pentax mount but maybe soon. It seems really interesting also.

Tokina 11-16mm

Somebody on another forum gave me this link to read a review about it.

Thanks.
on paper this is a better lens than the sigma

however its not out, so no one knows for sure.

OTOH the sigma's range into 20mm means that you will find yourself not wanting to switch lenses that often when out on the street
05-27-2008, 02:37 PM   #9
Veteran Member
ftpaddict's Avatar

Join Date: Jan 2008
Location: Yurp
Photos: Gallery
Posts: 4,666
Go for the Sigma - it's out already, it's cheaper than the 16-50, and it's been getting good reviews.
05-27-2008, 05:50 PM   #10
CWL
Junior Member




Join Date: Jan 2008
Location: Syracuse NY
Posts: 40
The Sigma 10-20mm openned up a new world in photography to me. It is completely different to the 16mm you experienced in terms of perspective, creativities and photo opportunities. It is my most fav travel lens. I even used it for portrait sometimes, it is fun and very different to the standard portrait focal length. Check the Ultrawide portrait group in Flickr...
05-27-2008, 06:04 PM   #11
Veteran Member
pop4's Avatar

Join Date: Aug 2007
Location: YMML
Photos: Gallery
Posts: 1,879
Here's something I cooked up earlier that might be of help:

05-27-2008, 07:46 PM   #12
Inactive Account




Join Date: Mar 2008
Location: Burlington, Ontario
Photos: Gallery
Posts: 374
POP4 - that is awesome!

Thanks for posting that.

I REALLY want that Sigma 10-20mm

Hopefully one comes into the marketplace reasonable priced one day.

D.
05-27-2008, 11:34 PM   #13
Senior Member




Join Date: Apr 2008
Location: Barcelona, Spain
Posts: 264
Original Poster
Wow, thank you guys!!

I think I will consider this lens seriously.

Thanks.
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!
10mm, 16mm, k-mount, pentax lens, sigma, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Difference between Pentax fish eye @ 10mm and Sigma @ 10mm? Big G Pentax SLR Lens Discussion 15 10-07-2010 12:12 PM
Sigma 10mm f/2.8 EX DC Fisheye jezza323 Pentax SLR Lens Discussion 1 03-29-2010 04:13 PM
fixed 10mm insulinguy Pentax SLR Lens Discussion 7 09-24-2009 09:38 PM
Sigma 4.5mm and 10mm f:2.8 Substitute Pentax SLR Lens Discussion 5 09-06-2009 04:37 AM
New Sigma Fisheye 10mm F2.8 EX DG for Pentax Blue Pentax SLR Lens Discussion 13 12-02-2008 04:40 PM



All times are GMT -7. The time now is 01:44 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