Sony A58 Review

 
Camera Reviews / Sony Cameras / Sony Alpha i Review

Sony A58 Flash


Flash Test Results

Coverage and Range
Excellent flash range, but with narrow and uneven coverage at wide angle. Our standard indoor portrait shot required lower than average exposure compensation.

Click to see AA58FLFCW.JPG Click to see AA58FLFCT.JPG
18mm 55mm
Click to see AA58INBFP1.JPG Click to see AA58INBFSP0.JPG
Normal Flash
+0.3 EV
Slow-Sync Flash
0 EV

Coverage. Flash coverage is quite narrow and uneven at wide angle (18mm), leaving very dark corners in our flash coverage test image. Coverage is much more uniform at full telephoto (55mm), with only minor fall-off in the corners. Our telephoto test image has a pinkish tint to it, though (auto white balance was used.)

Exposure. Our Indoor Portrait test scene is bright with only +0.3 EV flash exposure compensation at ISO 200. The average amount of flash exposure compensation required for this scene is +0.7 EV, so the A58's flash system performed better than average here. The camera's Slow-Sync flash mode produced very bright results with no flash exposure 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 AA58FL06W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL07W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL08W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL09W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL10W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL11W.JPG
1/60 sec
f3.5
ISO 200
12 ft 13 ft 14 ft 15 ft 16 ft
Click to see AA58FL12W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL13W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL14W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL15W.JPG
1/60 sec
f3.5
ISO 200
Click to see AA58FL16W.JPG
1/60 sec
f3.5
ISO 200

Flash Range: Telephoto
6 ft 7 ft 8 ft 9 ft 10 ft 11 ft
Click to see AA58FL06T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL07T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL08T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL09T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL10T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL11T.JPG
1/60 sec
f5.6
ISO 200
12 ft 13 ft 14 ft 15 ft 16 ft
Click to see AA58FL12T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL13T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL14T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL15T.JPG
1/60 sec
f5.6
ISO 200
Click to see AA58FL16T.JPG
1/60 sec
f5.6
ISO 200

ISO 200 Range. With the 18-55mm kit lens, flash exposures at wide angle started out bright at 6 feet, and actually increased or maintained brightness to 15 feet. While 16 feet isn't quite as bright, it's still well-exposed, so we'll call the range 16 feet at wide angle which is excellent. At full telephoto, flash exposures are bright out to 9 feet, dropping off from there.


Manufacturer-Specified Flash Range
Wide Angle Telephoto
Click to see AA58FL_MFR094WM0100.JPG
9.4 feet
ISO 100
Click to see AA58FL_MFR059TM0100.JPG
5.9 feet
ISO 100

Manufacturer Specified Flash Test. The Sony A58's built-in flash unit is rated with a Guide Number of 10 meters or 32.8 feet at ISO 100. That works out to about 9.4 feet at f/3.5 and 5.9 feet at f/5.6, the maximum apertures of the kit zoom lens. In the test shots above taken at those distances, the A58's flash produced bright flash exposures (even slightly overexposed at wide angle), which confirms Sony's flash power rating is credible. Again, note the pinkish cast with auto white balance.

Our standard test method for flash range uses a fixed setting of ISO 200, to provide a fair basis of comparison between cameras. We also shoot two shots using the manufacturer-specified camera settings, at the range the company claims for the camera, to assess the validity of the specific claims.

 

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Note: For details, test results, and analysis of the many tests done with this camera, please click on the tabs at the beginning of the review or below.

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