Guest roey Posted September 9, 2009 Share #1 Posted September 9, 2009 Advertisement (gone after registration) Leica's SF-58 flash has a high speed sync mode that allows use of the flash at shutter speeds shorter than the max sync speed of the camera -- if the camera supports it. I have previously used HSS on the Canon system and found it to be useful when I wanted to use fill flash in bright sunlight in conjunction with a large aperture. The M8 doesn't support HSS, which until now I attributed to it being older than the SF-58. According to "the brochure" the M9 does not support it either, however the M7 does. As far as I am concerned this is the only omission from the M9 that is really bothering me. But I seem to be alone with this opinion. What am I missing here? Link to post Share on other sites More sharing options...
Advertisement Posted September 9, 2009 Posted September 9, 2009 Hi Guest roey, Take a look here High Speed Sync -- What am I missing?. I'm sure you'll find what you were looking for!
jackal Posted September 14, 2009 Share #2 Posted September 14, 2009 yep it would be nice can you still get it to work manually ? maybe by overiding the M9 in some way so the flash still fires Link to post Share on other sites More sharing options...
Guest roey Posted September 16, 2009 Share #3 Posted September 16, 2009 I haven't found a way to override it. As far as I remember HSS only becomes an option if the camera supports it. Link to post Share on other sites More sharing options...
Nicoleica Posted September 16, 2009 Share #4 Posted September 16, 2009 Hi, As I understand it, the M8 & M9 don't support HSS as they do not employ true TTL flash metering. (Only TTL flash via pre-flash.) I believe that this is due to the different reflective qualities of the digital sensor as compared to those of film emulsion. Link to post Share on other sites More sharing options...
Guest roey Posted September 16, 2009 Share #5 Posted September 16, 2009 Interesting. My understanding of how HSS works is very limited. On the Canon system the flash unit sends out multiple weaker flashes while the shutter curtains move over the sensor, thus providing even illumination for the whole sensor. I'd always assumed that HSS support on a camera means that it can tell the flash when the shutter movement starts and when it ends. Link to post Share on other sites More sharing options...
mjh Posted September 16, 2009 Share #6 Posted September 16, 2009 All current DSLRs use some kind of preflash TTL and still support HSS; it must be something else. (HSS mode turns the flash into a 10,000 to 50,000 Hz strobe light, ensuring every part of the sensor will be evenly lit.) Link to post Share on other sites More sharing options...
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