Reason for slow flash sync speed

Started Mar 13, 2014 | Discussions thread
le_alain Senior Member • Posts: 1,894
Re: Reason for slow flash sync speed

dotborg wrote:

le_alain wrote:...

HSS far less power with the flash, and doesn't work with manual or auto flash for instance.

How much power do you need? That F42 flash of mine is really too much power much of the time. I guess it all comes down to what you are using it for, how high you can let the ISO go, etc. I don't think I've ever come up with a use for HSS, but I'm glad I have it, and hope to make better use of it one day. I've seen some neat experimental photos with drop of water and such, and I think you'd need HSS for that.

I don't know what you mean about it not working with manual or auto flash. I was probably set to fill-flash - is that what you meant?

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Gary W.

I don't know what "far less power" means for Sony flashes but the Canon flashes I have loose about a stop at full power. Considering how much you would have to stop down to accommodate a 1/160s sync speed in full daylight, it more than makes up for it.

Look at this for the variation of the guid number,

far for a stop:

 le_alain's gear list:le_alain's gear list
Epson R-D1 Sony Alpha a7S Sony Alpha a7R II Sony FE 55mm F1.8 Sony FE 24-70mm F4 OSS
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