So I bought my K100D refurbished without lenses, because we had manual lenses from a k1000 from 20 some years ago.
Then I bought the kit 18-55mm DA lens. And just recently I purchased it's counterpart 50-200mm DA lens.
As you know these lenses are designed specifically for the APS-C CCD cameras. In theory they could work with a film camera, but obviously no aperture control; most importantly though the DA lenses will not fill the entire 35mm frame; because they are designed to work with the smaller CCD size.
And so this got me thinking. Why are CCDs the sizes that they are? Why are they not equivilant to 35mm? Is this a restriction due to cost, or a technology barrier? I am pretty sure there are DSLRs out there that have CCDs with an exact 35mm equivilant. So this must be a cost restriction?
Do you think this barrier, whatever it is, will be broken in the future to the point where an exact 35mm equivilent will become standard for all new dslrs?
Think of LCD tvs - 4 years ago, they had them in stores sure, but they were thousands of dollars. Today, you can't buy any tv that isn't a flat screen anymore, and they start in the hundreds of dollars for very large screens. That wasn't really a technology barrier (although I'm sure they've streamlined the manufacturing process since then), that was a cost supply/demand barrier.
My point? I have 6 lenses that work with film and dslrs - mostly all manual, one with an automatic aperture setting. I have 2 DA lenses which will only work with DSLRs with a APS-C CCD.
What are we going to be talking about 10 to 20 years from now? Will I still be sitting here playing with my manual lenses, and discarding my DA lenses because they only worked with the cameras of '00s? Or, is the size of APS-C ccds just the way it is because of some physical law that I am not familiar with?
I think Pentax was brilliant to make one mount (k mount), and only one, so that the barrier of entry becomes broken down overtime because, well, you can use any lense ever made for that mount, and it's still relevant without having to buy adapaters for each iteration of their mounts. And looking at it that way, the DA lenses being specific to CCD sensors disspoints me.
Then again, I don't like how there is no aperture ring either. I don't understand why they couldn't have kept the "A" option and allowed for manual intervention of aperture settings. There by allowing new lenses to be backward compatible with old camera bodies like the K1000....maybe they will change that in the future too....
Last edited by Capslock118; 11-05-2010 at 04:14 AM.