Pentax K100D Review

 
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Pentax K100D Flash


Flash Test Results

Coverage and Range
Good flash performance, with good coverage and intensity. Much less positive exposure compensation required than average.

18mm equivalent 55mm equivalent
Normal Flash, Default Exposure Night Portrait Mode, Default Exposure

Flash coverage was slightly uneven at wide angle, with falloff in the corners of the frame. However, at telephoto, coverage is much more even. Indoors, under incandescent background lighting, the Pentax K100D's flash performed quite well at its default exposure. There's a slight orange color cast to the background from the incandescent light source, but overall color is pretty good. With the camera's Night Scene Portrait mode, results are also quite bright at the default exposure, though the longer shutter time results in a much stronger orange cast.

Flash Range: Wide Angle
6 ft 7 ft 8 ft 9 ft 10 ft 11 ft
Click to see K100FL06W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL07W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL08W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL09W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL10W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL11W.JPG
1/30 sec
f3.5
ISO 200
12 ft 13 ft 14 ft 15 ft 16 ft
Click to see K100FL12W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL13W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL14W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL15W.JPG
1/30 sec
f3.5
ISO 200
Click to see K100FL16W.JPG
1/30 sec
f3.5
ISO 200

Flash Range: Telephoto
6 ft 7 ft 8 ft 9 ft 10 ft 11 ft
Click to see K100FL06T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL07T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL08T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL09T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL10T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL11T.JPG
1/80 sec
f5.6
ISO 200
12 ft 13 ft 14 ft 15 ft 16 ft
Click to see K100FL12T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL13T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL14T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL15T.JPG
1/80 sec
f5.6
ISO 200
Click to see K100FL16T.JPG
1/80 sec
f5.6
ISO 200

The Pentax K100D's flash was bright and powerful, with excellent intensity all the way to 16 feet at wide-angle, and to 9 feet at telephoto, both at ISO 200.


Manufacturer-Specified Flash Range
55mm
Click to see K100FL_MFR0194TM0200.JPG
9 feet at f/5.6
ISO 200

Our standard test method for flash range uses a fixed setting of ISO 100, to provide a fair basis of comparison between cameras. The Pentax K100D's ISO starts at ISO 200, but they claim that a guide number of 15.6 meters at ISO 200. That translates to about 9 feet at f/5.6. In the shot above, the K100D seems to perform exactly as Pentax says it will, producing good exposures at the rated distances with its ISO set to 200.

 

Pentax K100D

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