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Greg's comparison between Olympus FL-50 and Mecablitz 58 AF-1 O
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This is a page I wrote in late 2008 or early 2009, when I was thinking of buying an Olympus FL-50 or a Mecablitz 58 AF-1 O flash unit. It compares specifications gleaned from multiple sources. It's now completely out of date.

Specs

Feature       Olympus       Mecablitz
Shortest focal length (35 mm)       16       24/18
Longest focal length (35 mm)       85       135
Guide number 16 mm equiv       18
Guide number 50 mm equiv       40       42 (B&H)
Guide number 85 mm equiv       50
Guide number 105 mm equiv       50       58
Flash count (full power, alkaline)       150       150
Flash count (full power, NiMH)       170       180
Flash count (full power, Li)       220      
Flash count (full power, external)             430
Flash recovery before recharge       10 s
Recovery time (full flash, alkaline)       6.5 s       5 s
Recovery time (full flash, NiMh)       4 s       5 s
Recovery time (full flash, Li)       5 s
Recovery time (full flash, external)             2.5 s
Minimum flash duration
Maximum flash duration
TTL auto mode       yes       yes
Auto mode       yes       yes
Manual mode       yes       yes
FP TTL auto mode       yes       yes
FP manual mode       yes       yes
Supplementary reflector       ?       yes
2nd curtain sync       ?       yes
automatic fill-in flash       ?       yes
AF assist       yes
Strobe mode       ?       yes


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