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Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
400
Focal Length
77.5mm
Exposure Data:
f/4.0 @ 1/200s
Size
2592x3872
Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
400
Focal Length
150.0mm
Exposure Data:
f/4.5 @ 1/250s
Size
2592x3872
Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
400
Focal Length
300.0mm
Exposure Data:
f/5.8 @ 1/640s
Size
3872x2592
Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
400
Focal Length
170.0mm
Exposure Data:
f/4.5 @ 1/1000s
Size
2592x3872
Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
400
Focal Length
62.5mm
Exposure Data:
f/10.0 @ 1/160s
Size
2592x3872
Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
400
Focal Length
150.0mm
Exposure Data:
f/4.5 @ 1/250s
Size
2592x3872
Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
400
Focal Length
55.0mm
Exposure Data:
f/7.1 @ 1/250s
Size
2592x3872
Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
400
Focal Length
150.0mm
Exposure Data:
f/4.5 @ 1/200s
Size
2592x3872
Make
PENTAX Corporation
Model
PENTAX K10D
ISO Speed
200
Focal Length
210.0mm
Exposure Data:
f/5.6 @ 1/800s
Size
2592x3872
Verdict
The Pentax SMC DA 55-300mm f/4-5.8 ED is a viable choice when it comes to an affordable long range tele lens. The resolution figures are pretty decent and in field conditions it shines with a snappy contrast characteristic. The secondary characteristics (vignetting, distortions, CAs) are about average for a lens in this class. All-in-all it is optically superior compared to its smaller cousin, the SMC DA 50-200mm f/4-5.6 ED. The build quality of the lens is fine and the AF is fast enough for most applications. A sound offer relative to its pricing.
(a better copy may get 
) 