10-20mm vs 4.5mm

janok · 9th of January 2012 (Mon)

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

DaveKosiba · 9th of January 2012 (Mon)

I like the top picture taken with the Sigma 10-20, not crazy about all the distortion caused by the 4.5mm fisheye.

Snydremark · 9th of January 2012 (Mon)

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.

ThreeD23 · 9th of January 2012 (Mon)

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

Chet · 9th of January 2012 (Mon)

I like the 10-20. The loss of detail and as you mention loss of sharpness is to noticeable with the 4.5.

whoty · 9th of January 2012 (Mon)

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.

J-Blake · 9th of January 2012 (Mon)

Top one for sure!

Gary McDuffie · 9th of January 2012 (Mon)

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!

tmcman · 10th of January 2012 (Tue)

The 4.5 really amps the foreground.
Could be an awesome effect with the right foreground.

Old Baldy · 10th of January 2012 (Tue)

Love the top one. Don't like the distortion of the 4.5

Celestron · 10th of January 2012 (Tue)

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 .

dandan1 · 11th of January 2012 (Wed)

I love the 4.5mm and how creative the photographer can get with it. Nice pictures.

Chopper Al · 11th of January 2012 (Wed)

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

Al

Richard Fleming · 12th of January 2012 (Thu)

really like the top one but like mentioned the 4.5mm is really cool

9th of January 2012 (Mon)	#2
DaveKosiba Member Join Date: Jan 2011 Location: Atlanta Posts: 292 IMAGE EDITING OK	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 60D•70-200 f/4 L•70-300 f/4-5.6 IS USM•Tamron 17-50 f/2.8 (non-VC)•Canon 10-22 f/3.5-4.5•Sigma 30 f/1.4•430 EX

9th of January 2012 (Mon)	#3
Snydremark Cream of the Crop Join Date: Mar 2009 Location: Issaquah, WA Posts: 12,531 IMAGE EDITING OK	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, 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."

9th of January 2012 (Mon)	#4
ThreeD23 Member Join Date: Nov 2011 Location: Frankfurt/Main - Germany Posts: 209 IMAGE EDITING OK	Re: 10-20mm vs 4.5mm the second one is a more interesting composition. good job! __________________ canon camera and lenses - call me flo!

9th of January 2012 (Mon)	#5
Chet BrokenMember Join Date: Sep 2007 Location: Within the POTN viewing area. Posts: 36,073	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. __________________ xti • 100mm f/2.8 • 50mm f/1.4 • EF 28-135mm f/3.5-5.6 IS • EF 75-300mm f/4-5.6 • EF-S 18-55mm f/3.5-5.6

9th of January 2012 (Mon)	#6
whoty Senior Member Join Date: Nov 2010 Location: Pensacola,FL Posts: 1,636 IMAGE EDITING OK	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. __________________ ''A technical instrument can never make a creative decision.'' Joel Grimes

9th of January 2012 (Mon)	#1
janok Member Join Date: Aug 2011 Posts: 260 IMAGE EDITING OK	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

9th of January 2012 (Mon)	#7
J-Blake Senior Member Join Date: Dec 2009 Location: Westminster, CO Posts: 1,552 IMAGE EDITING OK	Re: 10-20mm vs 4.5mm Top one for sure! __________________ Jon So much to learn, so little time. A few worthy shots

9th of January 2012 (Mon)	#8
Gary McDuffie Goldmember Join Date: Oct 2008 Location: Scottsbluff, NE Posts: 2,873 IMAGE EDITING OK	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* If you're going to shoot something, use a Canon! *----------* 7D, some L, a Froto, constantly shooting & learning via POTN

10th of January 2012 (Tue)	#9
tmcman Goldmember Join Date: Apr 2007 Location: NJ Posts: 3,132 IMAGE EDITING OK	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

10th of January 2012 (Tue)	#10
Old Baldy Member Join Date: Sep 2010 Location: South Lyon, MI Posts: 706 IMAGE EDITING OK	Re: 10-20mm vs 4.5mm Love the top one. Don't like the distortion of the 4.5 __________________ OB NEX-5N vs NEX-7 NEX-5N compared.... Gear list Flickr Gallery

10th of January 2012 (Tue)	#11
Celestron Cream of the Crop Join Date: Jun 2007 Location: West Texas Posts: 6,307	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 . __________________ Ron "Still Learning" Flickr http://home.grandecom.net/~r.hodges/

11th of January 2012 (Wed)	#12
dandan1 Senior Member Join Date: Sep 2010 Location: Silicon Valley, CA Posts: 1,223	Re: 10-20mm vs 4.5mm I love the 4.5mm and how creative the photographer can get with it. Nice pictures. __________________ ISOlution\|Photography

11th of January 2012 (Wed)	#13
Chopper Al Member Join Date: Apr 2009 Location: London, ON, Canada Posts: 511 IMAGE EDITING OK	Re: 10-20mm vs 4.5mm Ditto for the first image. Actually I like both, but the first one pops more for me. Al __________________ I will not be pushed, filed, stamped, indexed, briefed, debriefed or numbered. Canon T2i - 18-55mm IS - 55-250mm IS - 50mm 1.8 II (Nifty Fifty) - 60mm 2.8 macro - 420ex Flash

12th of January 2012 (Thu)	#14
Richard Fleming Member Join Date: Aug 2011 Location: i live in Clintwood, Va, near the Ky and Tn border.. Posts: 100 IMAGE EDITING OK	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...

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