On 13 Jan 2007 14:00:14 GMT, "J. Clarke"
wrote:

On Sat, 13 Jan 2007 10:02:48 +0100, Jeroen Wenting wrote:

Anyway, anything is full frame for a given definition of "frame". DX is
"full frame", so is 645, so is 35mm, and so is 6x6. And I doubt Nikon
will ever produce a 6x6 DSLR, which (being the largest of those formats)
is the only true "full" frame among them, everything else is smaller and
therefore a subset of 6x6.

The accepted definition of "full frame" is 35mm equivalent. By pretending
that you don't know this or trying to redefine the term you're exposing
yourself as ignorant, loony, or trolling.

35mm is a cropped format compared to 6x6. It's all relative to what
you are used to.

If medium fomat is your reference, then 35mm is cropped, and the 35mm
crop factor is 1.5. Instead of shooting portraits with your 150mm
lens, you would use 150/1.5 = about 100mm.

Focal lengths relative to the 35mm format are useful for many of us
because the format is so common, and we probably have some of the
lenses designed for that format around. But this format is now fading
and will be much less common in a few years.

So we should gradually stop comparing everything to 35mm.

The term "cropped format" is a bit depreciating, and suggests you are
losing something. You are not. The current Nikon and Canon small frame
formats are respectable and here to stay.

A normal focal length for the new formats is 30mm. Remember that
number: 30mm. No need to multiply anything.

KS