| Support this site by shopping via these links |
|
|
|
Nikon D40 wide-angle geometry comparison
|
 |
|
To measure and compare the Nikon D40's
kit lens geometric distortion we photographed a test chart consisting of a grid pattern,
using it and a number of rival models.
Here are the results for each camera with their kit lenses at their
widest focal length; where possible, the aperture was closed.
The images were analysed with Imatest using 5th Order line calculation and
the full areas presented here at a reduced resolution.
|
DX 18-55mm II at 18mm f8
Distortion: 3.73% barrel |
| |
| The image above was taken with the Nikon D40 using the DX 18-55mm II kit lens zoomed-out to 18mm.
Barrel distortion was measured at 3.73% which is more pronounced than the other lenses below, although not a great deal more than the Canon 400D / XTi's kit lens. |
Canon 400D / XTi
Using EF-S
18-55mm |
|
Canon PowerShot G7 |
|
Olympus E-400
Using ZD 14-42mm |
|
|
|
|
|
EF-S 18-55mm at 18mm f8
Distortion: 3.35% barrel |
|
7.4-44.4mm at 7.4mm
Distortion: 3.34% barrel |
|
ZD 14-42mm at 14mm f8
Distortion: 2.97% barrel |
Nikon D40 telephoto geometry comparison
 |
|
To measure and compare the Nikon D40's
kit lens geometric distortion we photographed a test chart consisting of a grid pattern,
using it and a number of rival models.
Here are the results for each camera with their kit lenses at their
longest focal length; where possible, the aperture was closed.
The images were analysed with Imatest using 5th Order line calculation and
the full areas presented here at a reduced resolution.
|
DX 18-55mm II at 55mm f8
Distortion: 0.21% barrel |
| |
| The image above was taken with the Nikon D40 using the DX 18-55mm II kit lens zoomed-in to 55mm.
Barrel distortion was measured at 0.21% which is a lower degree of distortion than the two Canon models below - albeit in the other direction - and equal to the latest Olympus kit lens. |
Canon 400D / XTi
Using EF-S
18-55mm |
|
Canon PowerShot G7 |
|
Olympus E-400
Using ZD 14-42mm |
|
|
|
|
|
EF-S 18-55mm EF-S at 55mm f8
Distortion: 0.389% pincushion |
|
7.4-44.4mm at 44.4mm f5.6
Distortion: 0.28% pincushion |
|
ZD 14-42mm at 42mm f8
Distortion: 0.21% barrel |
|
