Sigma SD1 Review

 
Camera Reviews / Sigma Cameras i Initial Test

Sigma SD1 Flash


Flash Test Results

Coverage and Range
Good power from the flash, though uneven and narrow coverage. Our standard shots required a slightly above average amount of compensation.

Flash coverage, at 17mm Flash coverage, at 50mm
Normal Flash
+ 1.0 EV
Slow-Sync Flash
Default

Coverage. Flash coverage was rather uneven at wide-angle (17mm) showing rather dark corners (though some of the fall-off is from the lens itself), and the upper half of the flash beam is brighter than the lower. There's also a shadow from the 17-50mm f/2.8 lens at wide-angle, though that's not unusual. Flash coverage was much more even at full telephoto (50mm).

Exposure. The Sigma SD1's flash required +1.0 EV exposure compensation adjustment to produce bright results in our Indoor Portrait test, which is a little higher than average among the cameras we've tested. (The average is +0.7 EV for this shot.) The camera's Slow-Sync flash mode produced very bright results without any compensation, though with a stronger orange cast from the ambient room lighting.


Flash Range: Wide Angle
6 ft 7 ft 8 ft 9 ft 10 ft 11 ft
Click to see SD1FL06W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL07W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL08W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL09W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL10W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL11W.JPG
1/30 sec
f2.8
ISO 200
12 ft 13 ft 14 ft 15 ft 16 ft
Click to see SD1FL12W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL13W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL14W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL15W.JPG
1/30 sec
f2.8
ISO 200
Click to see SD1FL16W.JPG
1/30 sec
f2.8
ISO 200

Flash Range: Telephoto
6 ft 7 ft 8 ft 9 ft 10 ft 11 ft
Click to see SD1FL06T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL07T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL08T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL09T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL10T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL11T.JPG
1/60 sec
f2.8
ISO 200
12 ft 13 ft 14 ft 15 ft 16 ft
Click to see SD1FL12T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL13T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL14T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL15T.JPG
1/60 sec
f2.8
ISO 200
Click to see SD1FL16T.JPG
1/60 sec
f2.8
ISO 200

ISO 200 Range. Exposures were quite inconsistent in our flash range series test. At wide-angle, flash exposures were very dim at 6, 7 and 8 feet, but abruptly became overly bright at 9 feet. Exposure at 10 feet was dim, but 11 feet wasn't too bad with brightness dropping off from there. We got inconsistent results at full telephoto too, with 15 feet being the brightest, while brightness at other distances varied. You may need to experiment with exposure compensation to get good flash exposures with the SD1 in the real-world.


Manufacturer-Specified Flash Range
Click to see SD1FL_MFR182M0200.JPG
18.2 feet
ISO 200

Manufacturer Specified Flash Test. The Sigma SD1's flash Guide Number (GN) is 11 meters in auto flash mode at ISO 100, which translates to a range of about 18.2 feet at ISO 200 and f/2.8, the maximum aperture of our zoom lens (it's a constant aperture lens, so we don't have separate telephoto results.) Exposure is bright in the flash shot above, indicating the flash range specification is accurate. Our standard test method for flash range now uses a fixed setting of ISO 200, to provide a fair basis of comparison between cameras. We also shoot using manufacturer-specified camera settings, at the range the company claims for the camera, to assess the validity of specific claims.

 

Sigma SD1

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