DPReview.com is closing April 10th - Find out more

On 7D flash synch speed

Started Nov 7, 2004 | Discussions thread
Alex Escada Regular Member • Posts: 291
Re: On 7D flash synch speed

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

Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow