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On 7D flash synch speed

Started Nov 7, 2004 | Discussions thread
santoguapo Senior Member • Posts: 1,674
Re: On 7D flash synch speed

I highly doubt the main difference between the shutters on the D70 and the 7D is price. In fact, the shutter on the 7D could very well be more expensive than the one on the D70 because they had to basically start from scratch on it to figure out how to minimize the vibrations. This was most likely not a concern on the D70. In addition, the D70 could easily use the shutter from an earlier film body.

This being said, I salute both companies. 1/500 sec flash sync is quite impressive! Kudos to Nikon. Also, somehow making AS work at the expense of some sync speed must have been quite a feat. Kudos to KM as well!

Alex Escada wrote:
Although the largest duration of the flash (full power) can be very
long (1/200s or so), with less power the duration falls
drastically. But the idea is to make a flash where the duration of
light is the smallest possible.
The need for high-speed syncs is mainly for fill in where the flash
power is reduced most of the times.
Expensive shutters normally can sync faster - by the way the
fastest focal plane shutter it's in Minolta SLRs (9xi and 9) with
1/300s.

Geir Ove wrote:

Alex Escada wrote:

Sync speed is a limitation of the shutter, expensive shutters are

This is not entirely correct. As I said in my original post, the
shutter speed cannot be faster than the duration of the flash in
situtations where you want to fully utlize the power of the flash.

Geir Ove

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Cheerio...
Rich

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