Some help please

[koffiejunkie]

I'm talking 24mm in FF terms. That should mean 15mm on a crop body. To be honest, I wasn't really thinking of that that when I wrote that, but when I read your response I thought maybe I remembered wrong, so I checked the website.

This function automatically sets the optimum illumination angle in accordance with the lens’ focal length in a range from 24 mm to 105 mm. When the built-in Wide Panel is used, the flash can cover the angle of up to that of a 17mm lens.

You're right, on the long end of the 10-20 I don't get vignetting at all, even with the pop-up flash.

 

[bwana]

I'm talking 24mm in FF terms. That should mean 15mm on a crop body. To be honest, I wasn't really thinking of that that when I wrote that, but when I read your response I thought maybe I remembered wrong, so I checked the website.

http://www.sigmaphoto.com/flashes/flashes_flashes_details.asp?id=3263

You're right, on the long end of the 10-20 I don't get vignetting at all, even with the pop-up flash.

Like I thought - 17mm.

A pop-up really is awful - doesnt matter what camera it is on - which is why anyone who's interested in shooting in low light (amongst other things) should get a proper one