Curious: why don't sensors & lenses have same shape?
Mar 27, 2018 22:09:40 #
JohnSwanda wrote:
I'll never understand why someone would go back and drag out a played out thread like this and then make the same comment that has already been made for several pages.
New member, just saw the thread, not familiar with UHH "best practices" of reading ALL the posts in a thread to avoid repetition... give the guy a break.
DRHall, welcome to UHH. Don't feel bad... there are lots of folks who read the original post and offer a reply without noticing that the same answer was perhaps further down on the first page, or buried somewhere in the ensuing pages. It is annoying to many.
Mar 28, 2018 00:51:40 #
Dragonophile wrote:
If sensors are rectangular or square, why aren't lenses? One of those questions that pop into your head as you are trying to fall asleep at night.
Ahh....you shoulda fallen asleep a little bit earlier, Dragonophile!!
Mar 28, 2018 04:18:35 #
wdross
Loc: Castle Rock, Colorado
Dragonophile wrote:
If sensors are rectangular or square, why aren't lenses? One of those questions that pop into your head as you are trying to fall asleep at night.
It would cost more money, effort, and time to produce a square or rectangular lense. One would have to take the round lenses elements of today's lenses and cut them square or rectangular. That, in and of itself, would cost more. Then to mount that element would require a much more complexly milled mount for the element. None of the elements could rotate. And these are just the starters for all that extra cost, effort, and time. Much easier, cheaper, and quicker to crop a square or rectangular out of the round image circle.
Mar 28, 2018 07:35:51 #
Dragonophile wrote:
If sensors are rectangular or square, why aren't lenses? One of those questions that pop into your head as you are trying to fall asleep at night.
Lenses are round because the sun is. And the light the lenses capture comes from the sun.
Mar 31, 2018 00:27:55 #
lmTrying
Loc: WV Northern Panhandle
JPL wrote:
Lenses are round because the sun is. And the light the lenses capture comes from the sun.
Man are you stretching this one. But I like it, even if it did hurt.
Apr 5, 2018 17:43:36 #
Dragonophile wrote:
If sensors are rectangular or square, why aren't lenses?
"In the beginning" Lenses were made by grinding the glass and the back and forth motion while working their way around produced, almost by default, a round lens, leading the makers to start with a round piece. Why they are still round? YGIAGAM
Apr 6, 2018 00:52:15 #
ToBoldlyGo
Loc: London U.K.
Rich1939 wrote:
"In the beginning" Lenses were made by grinding the glass and the back and forth motion while working their way around produced, almost by default, a round lens, leading the makers to start with a round piece. Why they are still round? YGIAGAM
What the heck do all those letters stand for?
Apr 6, 2018 00:54:19 #
ToBoldlyGo wrote:
What the heck do all those letters stand for?
Your guess is as good as mine... face palm!!!
Apr 8, 2018 09:11:51 #
The answer is very simple. People like rectangular images. Lenses must be cylindrical because of physics - light would bounce off flat edges, creating funky design issues.
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