So was the fuji mirrorless so was the nex and A series mirrorless.
So you know what they did they their own TECH documents call it Telecentric design? really?
Those aren't marketing they are WHITE PAPERS.
So you know what they did they their own TECH documents call it Telecentric design? really?
Those aren't marketing they are WHITE PAPERS.
On Wed, Mar 25, 2015 at 5:05 PM, karl shah-jenner <shahjen@xxxxxxxxxxxx> wrote:
Unlike older SLR systems, Four Thirds has been designed from the ground up
to be entirely digital. Many lenses are extensively computerized, to the
point that Olympus offersfirmware
<http://en.wikipedia.org/wiki/Firmware> updates
for many of them. Lens design has been tailored to the requirements of
digital sensors, *most notably through telecentric
<http://en.wikipedia.org/wiki/Telecentric_lens> designs*. The size of the
sensor is significantly smaller than for most DSLRs and this implies that
lenses, especially telephoto lenses, can be smaller. For example, a Four
Thirds lens with a 300 mm focal length
17.3mm x 13mm , diagonal = 21.6mm .. flange focal distance = 38.67 mm. This means the angle of convergence / divergence is closer to 30 degrees than the 60 degrees of many 35m camera systems. Still no closer to parallel really, the light is still convergent.
" near telecentric construction " is marketing talk. Not unlike a politician saying he nearly kept his promise. He did or he didn't. A lens is telecentric or it isn't - you have malaria or you don't.. Saying they chose to put the lens on their camera further from the film plane than some other makers and *almost as far* as some 35mm film cameras is really.. well, weak. Heck, this would suggest a standard K mount lens is even *more* telecentric (it's not) as it's registration distance is even greater
