I'm aware that by using this combination I will have neither A-TTL or E-TTL benefits and features, however I'm wondering if I'll have full-auto TTL?...what shutter speed will the 1N automatically select and will it be based on ambient light readings, up to the 1N's top sync speed of 1/250th? Many thanks to anyone who wants to take this on :)

-- Charles Hansen (charleshansen@aol.com), November 29, 2001

Answers

Yes, you will have full-auto TTL with the 1N/550EX. In program mode, the camera will expose for ambient light, but should the shutter speed calculate to slower than 1/60, it will choose 1/60 and expose for flash as the main light source. It will over-expose if the calculated shutter speed is faster than 1/250 (and never allow faster than 1/250 without the special custom function). BTW, A-TTL adds very little capability to "normal" TTL.

-- Dave Herzstein (dherzstein@juno.com), November 29, 2001.