okay having understood that camera manufacturers are able to have large sensors in some form of cameras and not large sensors in some other forms of cameras, so is it that these super zooms like (HX1 and HX100) technically cant have large sensors? is it a technical limitation of some kind that the sensor cant be big in these super zooms? else why these companies not put large sensors.. apologies for my novice technical understanding.. but this is interesting to understand when these companies have all the capabilities and know how of large sensors, then why not super zooms have large sensors.. any marketing need to make NEX and Alpha to survive?... any technical limitation which prevents this wonderful merger of super zooms with large sensors?
Yep...to simplify it without getting into the technical measurements - the tiny sensor allows for use of a tiny lens with a tiny focal range, that becomes an 'equivalent' of a much larger focal range when the tiny sensor's crop factor comes into play. If you look at the front of the lens on a superzoom, you'll see a lens focal range of something like 6mm to 52mm. That translates to an 'equivalent' of 35mm to 432mm on a 35mm film camera, because the tiny sensor will have a 'crop factor' of 6x.
If you placed, say, a DSLR sensor from the Nikon D7000 in there, which is known as an APS-C sensor which itself has a crop factor of only 1.5x, the lens would have to be about 5-6x larger to deliver the same focal range.
Ever see a DSLR lens that reaches out to 600mm? Especially one fairly 'fast' of aperture like F4? It requires its own tripod mount and carrying straps, and you need a wagon or SUV to cart it around. In order to have a zoom lens that can give the equivalent of 24mm to 800+mm like these superzooms do, the lens itself would have to be longer than your actual SUV!
--
Justin
galleries:
http://www.pbase.com/zackiedawg