Originally posted by jay So now we're going SMALLER than APS-C-width? The field-of-view would be reduced, and if we keep the same pixel density (which everyone is bitching about for image quality / dynamic range purposes), we end up with LESS megapixels when we crop 3:2.
And what about lenses with a petal hood?
And who's going to fab this special chip that will only see light in ONE body?
That's prohibitively expensive.
This whole square-format rumor was started by some idiot on dpreview, and doesn't make any sense from a marketing or technological standpoint.
Will someone please explain to me how this even seems plausible? Like, even in the slightest? What is there to gain? And how do they deal with the setbacks I've mentioned? FOV, MP density, petal hoods on lenses, and exorbitant fab process price.
Well a 21mm sq sensor has a surface area of 441mm squared. APS-c is 384mm squared. Rough guessitmate, keeping pixel density the same, gives you a 16MP sensor.
Increasing to 24 (sorry don't want to do the math) should give you an equivalent 14mp+ if cropped.
21mm may also fit the image circle of current lenses w/ just a tad of viginetting at wide angle large aperatures.
Samsung currently ONLY makes the CMOS for Pentax so it's not unreasonable for them to do a square sensor if yields are close to aps-c.
Pentax contribution to Sony's bottom line is probably minimal at best. Fab plants will probably be scrounging for customers. Pentax can design their own chips ect...
Increasing pixel density is not counterproductive if support circuitry is of high quality. Daylight landscapes suffer little (and actually gain) w/ higher pixel densities.
This also gets you to the same pixel count even cropped so it won't be smaller..
Matter of taste. I have nothing against higher pixel densities.
Do I want a square sensor? Doesn't really matter to me if I don't lose density in a crop.....
Anyways it IS a way to be different and do not see (if people actually buy into it) it hurting Pentax.
aps-H or square based on the current long axis WOULD hurt Pentax in all areas... I just picked 21 based on the chip yield on old fab equipment.....
IS Pentrax going this route... guess nobody but Pentax REALLY knows. I would be surprised if it wasn't at least kicked about on a saki break........
As to pro's and con's of density.................fun read
http://forums.dpreview.com/forums/read.asp?forum=1018&message=30236775&q=pixel+density&qf=m