Any chance of a mirror-less FF compact?

"Bruce" wrote in message
...
On Mon, 9 Aug 2010 09:29:01 -0700 (PDT), Bob G
wrote:

For under $1,000?


It depends what you mean by "full frame". For example, all the Four
Thirds DSLRs and Micro Four Thirds mirrorless cameras are full frame,
because the format was designed to be that size from the outset.


It all depends on the angle [or field] of view.

In a full frame 35mm camera this is 46.8deg across the diagonal.

Many digital SLR's use a smaller sensor, but in a 35mm body so the field of
view is reduced and you are carrying extra glass for no benefit, however
they also do [cheaper] "digital" lenses which only produce an in focus image
on the smaller sensor.

To a first approximation the same effect can be produced in a smaller or
larger camera, so a four thirds or similar camera may have the same angle of
view, same number of pixels, but use a smaller sensor and smaller [lighter]
lenses. The limiting factor on resolution then relates the size and
sensitivity of the pixels more than the overall camera design.



Film resolution is limited (and varies with ASA), and even the APS system
only allowed image size to be reduced by a third.


Film SLR's

Pentax 110
APS (e.g. Minolta)
35mm
Pentax 67