If you keep decent at the long end (not so long or not so fast) you'll get something like the Canon Powershot G3 or Pro1.
William Robb wrote:
The Pentax uses a 1/1.8" sensor. Not much smaller than the 2/3", and hardly enough to justify the porcine lens on the Sony. OTOH, I know that increasing the speed of a zoom lens by a stop increases the size a lot. My old Image (cheap third party) 80-200 f/4 is way smaller than my Tokina 80-200 f/2.8.
