|
Sigma AF 10-20mm f/4-5.6 EX DC (Pentax K) - Review / Test Report - Sample Images & Verdict |
|
Lens Reviews -
Pentax
|
|
Page 3 of 3
Sample Images
Here're some quick'n dirty sample images taken with the K10D and RAW-converted via ACR.
Sorry for the bad quality but the weather conditions were rather mediocre at the time
with only a few short moments of sunshine.
Click on a thumbnail to view the original file (opens in a separate window). Please note that the originals are FULL SIZE
(=several megabytes) which requires quite some bandwidth for downloading so please don't waste the limited resources here.
| Make |
PENTAX Corporation |
|
| Model |
PENTAX K10D |
| ISO Speed |
200 |
| Focal Length |
20.0mm
|
| Exposure Data: |
f/9.0 @ 1/160s |
| Size |
3805x2547 |
|
| Make |
PENTAX Corporation |
|
| Model |
PENTAX K10D |
| ISO Speed |
200 |
| Focal Length |
10.0mm
|
| Exposure Data: |
f/9.0 @ 1/200s |
| Size |
2592x3872 |
|
| Make |
PENTAX Corporation |
|
| Model |
PENTAX K10D |
| ISO Speed |
200 |
| Focal Length |
10.0mm
|
| Exposure Data: |
f/5.6 @ 1/20s |
| Size |
2592x3872 |
|
| Make |
PENTAX Corporation |
|
| Model |
PENTAX K10D |
| ISO Speed |
200 |
| Focal Length |
20.0mm
|
| Exposure Data: |
f/5.6 @ 1/13s |
| Size |
3872x2592 |
|
Verdict
The Sigma AF 10-20mm f/4-5.6 EX DC showed an pretty impressive performance with a few bugs.
The resolution characteristic is generally very good to excellent except in the extreme
corners at 10mm which are a bit soft at large aperture settings. A weak aspect of
the Sigma is very high vignetting at large apertures - to be fair this is relatively
normal regarding the extreme ultra-wide focal-length range. The CA characteristic (color shadows
at the image borders) is generally pretty good except in the extreme corners at 10mm.
The build quality of the lens is very high and leaves nothing to be desired. All in
all a good alternative to the native Pentax lens.
| Optical Quality: |  |
| Mechanical Quality: |  |
| Price/Performance: | |
|
