Canon Digital Photography Forums  

Go Back   Canon Digital Photography Forums > 'Sharing Knowhow' section > RAW, Post Processing and Printing > HDR
Register Rules FAQ Members List Search Today's Posts Mark Forums Read



Reply
 
Thread Tools Display Modes
Old 9th of January 2012 (Mon)   #1
janok
Member
 
janok's Avatar
 
Join Date: Aug 2011
Posts: 262
Default 10-20mm vs 4.5mm

Two pictures from the harbor area in Oslo (Aker Brygge). One is taken with a Sigma 10-20mm and the other with the Sigma 4.5mm.
The fish-eye can create some cool effects, but there are several trade-offs. The 4.5mm use just 1/3 of the CMOS real-estate and it there is somewhat brutal process to unfold the picture from a circle to a square format. This could reduce the sharpness significantly. Below you see the results. Let me know what you think.


Aker Brygge - Sigma 10-20mm by janokiese, on Flickr


Aker Brygge Sigma 4.5mm by janokiese, on Flickr
__________________
Jan O. Kiese | visit my Facebook page
janok is offline   Reply With Quote
This ad block will go away when you log in as member
Old 9th of January 2012 (Mon)   #2
DaveKosiba
Member
 
Join Date: Jan 2011
Location: Atlanta
Posts: 441
Default Re: 10-20mm vs 4.5mm

I like the top picture taken with the Sigma 10-20, not crazy about all the distortion caused by the 4.5mm fisheye.
__________________
Canon 70D Canon 70-200 IS L Canon 10-22 Sigma 30 Canon 17-55 430 EX Luma Cinch
DaveKosiba is offline   Reply With Quote
Old 9th of January 2012 (Mon)   #3
Snydremark
Cream of the Crop
 
Join Date: Mar 2009
Location: Issaquah, WA
Posts: 15,042
Default Re: 10-20mm vs 4.5mm

I think the distortion in the 4.5 shot makes for a more interesting composition and result. The 10-20 shot just looks lopsided, to me.
__________________
- Eric S.: My Birds/Wildlife (7D, 40D, Canon 10-22 f/3.5-4.5, Canon 24-105L f/4 IS, Canon 70-200L f/2.8 IS MkII, Canon 100-400L f/4.5-5.6 IS, Tamron 150-600 f/5-6.3 Di VC, Canon 100mm f/2.8 Macro, Tamron 18-270 DiII PZD, 580EX II)
"The easiest way to improve your photos is to adjust the loose nut between the shutter release and the ground."
Snydremark is offline   Reply With Quote
This ad block will go away when you log in as member
Old 9th of January 2012 (Mon)   #4
ThreeD23
Member
 
Join Date: Nov 2011
Location: Frankfurt/Main - Germany
Posts: 213
Default Re: 10-20mm vs 4.5mm

the second one is a more interesting composition. good job!
__________________
Flickr
Facebook

A Sony Camera and some Canon EF and FD stuff
ThreeD23 is offline   Reply With Quote
Old 9th of January 2012 (Mon)   #5
Chet
BrokenMember
 
Join Date: Sep 2007
Posts: 37,903
Default Re: 10-20mm vs 4.5mm

I like the 10-20. The loss of detail and as you mention loss of sharpness is to noticeable with the 4.5.
Chet is offline   Reply With Quote
Old 9th of January 2012 (Mon)   #6
whoty
Senior Member
 
whoty's Avatar
 
Join Date: Nov 2010
Location: Pensacola,FL
Posts: 1,967
Default Re: 10-20mm vs 4.5mm

The 10-20 shot is more cleaner and appealing to me. But,the 4.5 has a cool effect. I like them both,but if I had to print one,it's the 10-20 shot all the way.
__________________
There is nothing worse than a brilliant image of a fuzzy concept. - Ansel Adams
Facebook
Flickr
whoty is offline   Reply With Quote
Old 9th of January 2012 (Mon)   #7
J-Blake
Senior Member
 
Join Date: Dec 2009
Location: Westminster, CO
Posts: 1,707
Default Re: 10-20mm vs 4.5mm

Top one for sure!
__________________
Jon

So much to learn, so little time.

A few worthy shots
J-Blake is offline   Reply With Quote
Old 9th of January 2012 (Mon)   #8
Gary McDuffie
Goldmember
 
Gary McDuffie's Avatar
 
Join Date: Oct 2008
Location: Scottsbluff, NE
Posts: 3,011
Default Re: 10-20mm vs 4.5mm

Sorry. I come down on the side saying the fisheye loses something. I compared the two, and there are things I like about it, but the odd "distortion" just makes it look "not right". It almost feels painful to look at, because it doesn't look natural. What a beautiful area you have to shoot in!
__________________
Gary
"I'm a documenter, NOT an artist."
----------
7D, some L, a Manfroto, shooting & learning bit by bit via POTN
Gary McDuffie is offline   Reply With Quote
Old 10th of January 2012 (Tue)   #9
tmcman
Goldmember
 
tmcman's Avatar
 
Join Date: Apr 2007
Location: NJ
Posts: 3,887
Default Re: 10-20mm vs 4.5mm

The 4.5 really amps the foreground.
Could be an awesome effect with the right foreground.
__________________
Comments, Questions, Observations Welcome
1DsII, G12, 17-40, 50 f/1.4, TS-E 24mm f/3.5L, 70-200 f/4L IS, Gitzo 1541 w/ Markins M10 ballhead.

"Art always shows itself by doing much with few and simple things." A. W. Dow
tmcman is offline   Reply With Quote
Old 10th of January 2012 (Tue)   #10
Old Baldy
Member
 
Join Date: Sep 2010
Location: South Lyon, MI
Posts: 708
Default Re: 10-20mm vs 4.5mm

Love the top one. Don't like the distortion of the 4.5
Old Baldy is offline   Reply With Quote
Old 10th of January 2012 (Tue)   #11
Celestron
Cream of the Crop
 
Join Date: Jun 2007
Posts: 6,933
Default Re: 10-20mm vs 4.5mm

Gotta agree here also with #1 . FEs' do have a good purpose for the right photograph but doesn't work with this one for me . MHO . I think part of it to me is with the FE i loose the ability to see that it's actually an HDR image .
Celestron is offline   Reply With Quote
Old 11th of January 2012 (Wed)   #12
dandan1
Senior Member
 
Join Date: Sep 2010
Location: Silicon Valley, CA
Posts: 1,223
Default Re: 10-20mm vs 4.5mm

I love the 4.5mm and how creative the photographer can get with it. Nice pictures.
__________________
ISOlution|Photography
dandan1 is offline   Reply With Quote
Old 11th of January 2012 (Wed)   #13
Chopper Al
Member
 
Chopper Al's Avatar
 
Join Date: Apr 2009
Location: London, ON, Canada
Posts: 654
Default Re: 10-20mm vs 4.5mm

Ditto for the first image. Actually I like both, but the first one pops more for me.

Al
__________________
Yahoo!! Toys, toys, toys and more toys.

Al
Canon 60D - 50mm 1:8 IS - 18-55mm IS - 18-135mm IS Canon S1IS - Canon 420EX Flash
Chopper Al is offline   Reply With Quote
Old 12th of January 2012 (Thu)   #14
Richard Fleming
Member
 
Richard Fleming's Avatar
 
Join Date: Aug 2011
Location: i live in Clintwood, Va, near the Ky and Tn border..
Posts: 100
Default Re: 10-20mm vs 4.5mm

really like the top one but like mentioned the 4.5mm is really cool
__________________
______________________________
Canon T2i /MeiKe LCD Grip ...Canon EF-S 18-55mm f/4.0-5.6 IS...Canon "nifty two fifty" EF-S 55-250mm f/4.0-5.6 IS...Canon FD 70-300mm f/4.5...Canon EF "Nifty Fifty" 50mm f/1.8 II ...Canon FD 135mm f/2.8......Vivatar 28mm f/2.8...
Richard Fleming is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sigma 10-20mm vs Canon 20mm AlexTakesPhotos Canon EF and EF-S Lenses 7 9th of December 2010 (Thu) 14:48
Canon 20mm f2.8 vs Sigma 20mm f1.8 regandarcy Canon EF and EF-S Lenses 14 31st of July 2010 (Sat) 10:52
Canon 20mm f/2.8 OR Sigma 20mm f/1.8 psykon99 Canon EF and EF-S Lenses 5 16th of March 2009 (Mon) 19:23
Would Sigma 10-20mm Have Same Distorion as 20mm Prime? nitekatt2006 Canon EF and EF-S Lenses 2 8th of August 2006 (Tue) 11:38


All times are GMT -5. The time now is 07:16.


Powered by vBulletin® Version 3.6.12
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
This forum is not affiliated with Canon in any way and is run as a free user helpsite by Pekka Saarinen, Helsinki Finland. You will need to register in order to be able to post messages. Cookies are required for registering and posting. HTML in messages is not allowed, plain website addresses are automatically made active by the board.