YS-50, YS-60 & YS-90 Comparisons
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YS-50, YS-60 & YS-90 Comparisons |
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Any claim that these Sea & Sea strobes provide 105 x 95 degree coverage, which would be adequate for a 15mm lens, is absolutely ridiculous. The intensity difference at only 90 degree coverage is more than two f/stops. Following chart compares these strobes to the Ikelite SubStrobe 50: |
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Make Model Sea & Sea YS-60 Sea & Sea YS-90 series Ikelite SubStrobe DS-51 |
G / N 52 51 53 |
Coverage 67 67 68 |
w / diffuser 38 38 40 |
w / diffuser 75 83 80 |
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These strobes certainly do NOT provide even 90 degree coverage using the accepted standard of one f-stop difference for claimed coverage. Note that the TTL slave sensor mode of the Sea & Sea YS-90 must be triggered by a more powerful strobe for proper operation. This is why our wireless TTL Slave Sensor is offered as a separate device. Our Substrobe DS-51 recycles faster and provides more flashes per set of batteries while providing identical coverage and intensity. Click here for direct comparison when used with Olympus housings. |
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