Support Cameralabs by shopping at our partner stores or donating via Paypal
 

Follow me!
Camera Labs RSS Feed
Gordon Laing and Cameralabs on Google+
Camera Labs on Facebook
Camera Labs on Twitter

 
  Latest camera reviews

Olympus E-PM1
Nikon V1
Sony NEX-5N
Canon 100HS / 115HS
Canon 300HS / 220HS
Canon S100
GoPro HD Hero 2
Canon 510HS / 1100HS
Canon 310HS / 230HS
Canon SX150 IS
Olympus E-PL3
Canon SX40 HS
Sony NEX-C3
Panasonic GF3
Fujifilm HS20 EXR
Panasonic FZ150
Olympus E-P3
Panasonic FZ47 / FZ48
Nikon COOLPIX S9100
Sony Cyber-shot HX100V
Sony Cyber-shot HX9V
Panasonic FX77 / FX78
Canon SX230 HS
Canon EOS T3 / 1100D
Panasonic Lumix G3
Sony Cyber-shot TX10
Canon 500HS / 310HS
Nikon D5100
Sony Cyber-shot W510
Nikon COOLPIX L24
Canon PowerShot A1200
Panasonic FS18 / FH5
Canon PowerShot A800
Panasonic TZ18 / ZS8
Canon PowerShot A3300IS
Canon EOS 600D / T3i
Panasonic TZ20 / ZS10
Canon IXUS 1000/SD4500
Sony Alpha SLT-A33
Panasonic Lumix GH2
Nikon D7000
Canon PowerShot G12
Canon PowerShot S95
Panasonic Lumix LX5
Nikon D3100
Canon EOS 60D
Canon EOS 550D / T2i
Canon EOS 7D
Nikon D300s
Canon EOS 5D Mark II
Nikon D90

All reviews ....
 
 
   
 
  Best Buys: our top models
   
  Best Canon lens
Best Nikkor lens
Best Sony lens
Best budget DSLR
Best mid-range DSLR
Best semi-pro DSLR
Best point and shoot
Best superzoom
Best camera accessories
   
 



   
 



Camera Labs Forum

Any questions, comments or a great tip to share? Join our Forum and let everyone know.
   
 
  DSLR Tips



 
Support me by shopping at Amazon!
Olympus Zuiko Digital 25mm 1:2.8 'pancake' Gordon Laing, June 2008

More Results : Outdoor / Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting

Support this site by shopping via these links

 
 

Olympus ZD 25mm geometry comparison

 

To measure and compare the Olympus 25mm's geometric distortion we photographed a test chart consisting of a grid pattern, using it and a number of rival lenses.

Here are the results for each lens. The images were analysed with Imatest using 5th Order line calculation and the full areas presented here at a reduced resolution.

25mm at f8
Distortion: 1.52% barrel
 
The image above was taken with the Olympus 25mm lens. Barrel distortion was measured at 1.52% which is roughly in-between the two scores shown for the 14-42mm kit zoom at its widest and longest focal lengths; as such the pancake exhibits approximately the same distortion as the kit zoom at the same 25mm focal length. So average performance there, but it's worth noting that while the 50mm appears to deliver a much less distorted result with 0.49%, this lens is actually beaten by the kit zoom in this test when it's at 42mm. Now let's see how the 25mm measures-up in our light fall-off tests.

Olympus ZD ED 50mm
Olympus ZD ED 14-42mm
Olympus ZD ED 14-42mm
Olympus ZD ED 14-42mm wide-angle geometry
Olympus ZD ED 14-42mm telephoto geometry
50mm at f8
Distortion: 0.49% barrel
  14-42mm at 14mm f8
Distortion: 2.97% barrel
  14-42mm at 42mm f8
Distortion: 0.21% barrel

Olympus ZD 25mm results continued...

Outdoor / Resolution / Corner sharpness / Fringe and macro / Geometry / Vignetting


If you found this review useful, please support us by shopping below!
All words, images, videos and layout, copyright 2005-2012 Gordon Laing. May not be used without permission.

/ How we test / Best Cameras / Advertising / Camera reviews / Supporting Camera Labs