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  Test # 1208 
 
Lens Distortion Test

Sony 35mm 1.8

Distortion at 35mm.
 
Test by Sinan Ozturk   
PhotoAgainst Photo Editor's Comment: Barrel Distortion is optical flaw of a lens which causes straight lines in the photo look slightly curved outwards. Its much more apparent in wider focal lengths and zoom lenses and gets worse in the bottom or top of the photo, rather than center. It becomes apparent when skyline is photographed so we do barrel distortion tests with a clear skyline shot.

In the first comparison, skyline in the very bottom of the photo because this is where barrel distortion is worse for any lens.

In the second shot skyline is in the very center of the image where barrel distortion's effect is the least apparent.

In the third shot, skyline is in the 1/3 or 2/3 of the photo (golden rule) where distortion is same for both.

Red line in the photos are added in post production to show where skyline would suppose to be if lens were flawless with no distortion. The closer the real skyline to the red line, the better the lens and more apart the skyline from the red line, worse distortion the lens has.

For more information about this distortion tests, please read our distortion test guidelines.

After reviewing the test, scroll to the bottom of the page to compare 's Barrel Distortion with other lenses.
  
  
  Test Photo # 1  
Photo_2766Sony 35mm DT F/1.8 SAM  
F:4.5, S:1/60, ISO:125    
Photo by Sinan Ozturk 
    EXIF    
Sony A55     Camera    
Sony 35mm DT F/1.8 SAM     Lens    
4.5     Aperture    
1/60     Shutter    
125     ISO    
125     Brightness    
0     Contrast    
0     Saturation    
0     Sharpness    
35 mm.     Focal Length    
52 mm.     Foc.Len.FF eq    
34 mm.     Foc.Len.APS-C    
Standard     Scene Mode    
Auto     White Balance    
0.09 Mb.   Filesize    
1080 x 715 [0 MP.]   Dimensions    
 
  Test Photo # 2  
Photo_2767Sony 35mm DT F/1.8 SAM  
F:4.5, S:1/60, ISO:160    
Photo by Sinan Ozturk 
    EXIF    
Sony A55     Camera    
Sony 35mm DT F/1.8 SAM     Lens    
4.5     Aperture    
1/60     Shutter    
160     ISO    
131     Brightness    
0     Contrast    
0     Saturation    
0     Sharpness    
35 mm.     Focal Length    
52 mm.     Foc.Len.FF eq    
34 mm.     Foc.Len.APS-C    
Standard     Scene Mode    
Auto     White Balance    
0.12 Mb.   Filesize    
1080 x 717 [0 MP.]   Dimensions    
 
  Test Photo # 3  
Photo_2768Sony 35mm DT F/1.8 SAM  
F:4.5, S:1/60, ISO:200    
Photo by Sinan Ozturk 
    EXIF    
Sony A55     Camera    
Sony 35mm DT F/1.8 SAM     Lens    
4.5     Aperture    
1/60     Shutter    
200     ISO    
133     Brightness    
0     Contrast    
0     Saturation    
0     Sharpness    
35 mm.     Focal Length    
52 mm.     Foc.Len.FF eq    
34 mm.     Foc.Len.APS-C    
Standard     Scene Mode    
Auto     White Balance    
0.14 Mb.   Filesize    
1080 x 714 [0 MP.]   Dimensions    
 
Barrel Distortion Comparison
You can select 2 lens to compare their barrel distortions side by side:
against

 

 

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  Other Sony 35mm DT F/1.8 SAM vs. Comparisons  
Sony 35mm F1.8 Video Auto Focus Performance
at 35mm.
Auto Focus Noise (Sound), AF Speed and Focus Hunting Test (in Silent Enviroment)
Sony 35mm 1.8 Sharpness Test at 35mm.
at 35mm.
Tested Apertures Between F1.8 to F13.0
  Other Comparisons of Sony 35mm DT F/1.8 SAM  
Sony 35mm 1.8 vs. Minolta 35-105mm.
Sharpness at 35mm.
Tested Apertures F1.8/F4, F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sony 35mm 1.8 vs. Minolta 28-105
Sharpness at 35mm.
Tested Apertures F1.8/F4, F2.8/F4, F3.5/F4, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tamron 17-50 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Cosina 19-35 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F4.5, F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8
Sigma 17-70 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F3.5, F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sony 16-50 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sony 16-105 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F5, F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8
Minolta 28-70 2.8 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Tokina 28-70 2.8 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8
Sony 18-55 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F4.5, F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8
Tamron 18-200 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F4.5, F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8
Sony 35mm 1.8 vs. Minolta 35-105mm.
Sharpness at 35mm.
Tested Apertures F1.8/F3.5, F2/F3.5, F2.2/F3.5, F2.5/F3.5, F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 35mm 1.8 vs. Cosina 19-35
Sharpness at 35mm.
Tested Apertures F1.8/F4.5, F2/F4.5, F2.2/F4.5, F2.5/F4.5, F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 35mm 1.8 vs. Tamron 18-200
Sharpness at 35mm.
Tested Apertures F1.8/F4.5, F2/F4.5, F2.2/F4.5, F2.5/F4.5, F2.8/F4.5, F3.5/F4.5, F4/F4.5, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 35mm 1.8 vs. Sigma 17-70
Sharpness at 35mm.
Tested Apertures F1.8/F3.5, F2/F3.5, F2.2/F3.5, F2.5/F3.5, F2.8/F3.5, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 35mm 1.8 vs. Sony 16-105
Sharpness at 35mm.
Tested Apertures F1.8/F5, F2/F5, F2.2/F5, F2.5/F5, F2.8/F5, F3.5/F5, F4/F5, F4.5/F5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Tamron 17-50 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2/F2.8, F2.2/F2.8, F2.5/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Sony 16-50 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2/F2.8, F2.2/F2.8, F2.5/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11
Minolta 28-70 2.8 vs. Sony 35mm 1.8
Sharpness at 35mm.
Tested Apertures F1.8/F2.8, F2/F2.8, F2.2/F2.8, F2.5/F2.8, F2.8, F3.5, F4, F4.5, F5, F5.6, F6.3, F7.1, F8, F9, F10, F11