One to ponder
Jan 9, 2019 01:55:42 #
Jan 9, 2019 11:43:34 #
It’s a valid question. My question is why isn’t the sensor round to match the lens?
Jan 9, 2019 14:27:08 #
Spectre wrote:
Maybe a square peg does fit in a round hole!
That's the strangest question, I guess I've ever heard, there just nothing to ponder!
Jan 10, 2019 07:26:13 #
I've given it a lot of thought. And the obvious answer seems to be that the picture comes out square because round picture frames tend to roll off the table.
Jan 10, 2019 08:10:13 #
Jan 10, 2019 09:57:42 #
Burtzy wrote:
I've given it a lot of thought. And the obvious answer seems to be that the picture comes out square because round picture frames tend to roll off the table.
I’ll buy that answer and it got me thinking about round pizzas, that we cut into triangles, come in square boxes.
Jan 10, 2019 10:26:20 #
Jan 10, 2019 11:09:58 #
Like most things, it's an economic issue and an anachronism. The sensors are square to fit in box shaped camera bodies because that's what earliest film cameras were but the lens is circular because optics work best focusing light equally from every direction. After all, until a cell phone manufacturer makes a tube shaped cell phone with a circular lens and sensor we'll have rectangular images from our cameras.
Jan 10, 2019 16:03:37 #
Jan 11, 2019 01:34:06 #
Spectre wrote:
Maybe a square peg does fit in a round hole!
I've had similar thoughts about mirrors. How come in a mirror the left is on the right and right is on the left but the top and bottom aren't reversed also.
Jan 11, 2019 09:40:06 #
Jan 11, 2019 12:28:43 #
Errickcameron wrote:
Hmm... will have to reflect on that one.
It makes my hair hurt thinking about it.
Jan 11, 2019 18:56:04 #
fantom wrote:
I've had similar thoughts about mirrors. How come in a mirror the left is on the right and right is on the left but the top and bottom aren't reversed also.
Because the mirror is reflecting back to front, not right and left. It appears to be right and left because you are looking at the axis of symitry.
Jan 11, 2019 19:03:03 #
hassighedgehog wrote:
Because the mirror is reflecting back to front, not right and left. It appears to be right and left because you are looking at the axis of symitry.
How does the axis of symmetry affect top to bottom? It seems the axis of symirty (sic) is not doing its job---its only performing on the y axis (vertical) and not the x axis (horizontal) so that the top and bottom remain unchanged. There is something fishy going on here.
Jan 11, 2019 20:36:37 #
fantom wrote:
How does the axis of symmetry affect top to bottom? It seems the axis of symirty (sic) is not doing its job---its only performing on the y axis (vertical) and not the x axis (horizontal) so that the top and bottom remain unchanged. There is something fishy going on here.
Think front and back. When you look at an image you get the same effect. It is reversed right and left to you as well, Not up and down (unless you are holding it upside down). IF you have a shot of an object reflected in a lake (except if there are ripples in the water) and the picture is perfectly symmetrical, you don't know how to hold it. However, there are visual clues like the sky for up and down. You'll see where the plane of the mirror is by putting your hands together. A reflection is like the plane between them.
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