Ugly Hedgehog - Photography Forum
Sensor size question
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Jan 13, 2021 20:35:09   #
CHG_CANON Loc: the Windy City
 
The longer you read UHH, the more expensive it gets. See above for another example.

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Jan 13, 2021 20:50:47   #
User ID
 
CHG_CANON wrote:
The longer you read UHH, the more expensive it gets. See above for another example.

Spending money can get expensive. It’s just natural law plus quantum physics.

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Jan 13, 2021 21:24:33   #
WJShaheen Loc: Gold Canyon, AZ
 
Maybe we should stop calling it "crop" factor and use instead the term "zoom" factor, if anything at all.

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Jan 13, 2021 21:59:26   #
sippyjug104 Loc: Missouri
 
WJShaheen wrote:
Maybe we should stop calling it "crop" factor and use instead the term "zoom" factor, if anything at all.


Compared to a Medium Format sensor, a Full Frame sensor is a "cropped" size. I agree with you that a sensor should be referred to simply by its width in millimeters thus there would be an understanding exactly how one would compare to another.

Smartphones take more images today than other cameras yet there is no banter about how tiny its sensor is compared to a full frame camera...and frankly, does anyone really care?

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Jan 14, 2021 08:06:44   #
User ID
 
WJShaheen wrote:
Maybe we should stop calling it "crop" factor and use instead the term "zoom" factor, if anything at all.


Amen.

Before discussing anything involving numbers, ask the person this:

“If I increase my speed by 50% would that reduce my travel time by 50% ?”

Many folks who are otherwise intelligent have no grasp of simple math. It seems to be more of a psychological problem than an intellectual one.

Scenario:
Highly math-capable person persists in refining and simplifying a math concept, trying to make it comprehensible to a highly math-resistant person.

Question about scenario:
Which of those two persons is acting more like a box of rocks ?

Answer:
Depends entirely on whether you’re an observer or one of the participants.

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Jan 14, 2021 09:12:27   #
R.G. Loc: Scotland
 
User ID wrote:
...Question about scenario:
Which of those two persons is acting more like a box of rocks ?.....


My question:

Which one is responding to the OP's original request?

My prediction is that even a highly math-resistant person will understand multiplying and dividing by 2 and dividing by 3.

My other prediction is that there will be some following this thread who won't have realised how simple it was (until it was explained simply).

There are others who have suggested that the OP's original question is irrelevant. My guess is it's relevant to any DX owner who is used to thinking in terms of DX focal lengths but wants to know what the FF equivalent options are, given the possibility that they may want to move up to FF. To that you could add FF owners who also have a DX camera (or are considering one) and want to work out which DX focal lengths will complement what they have already.

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Jan 14, 2021 09:37:22   #
User ID
 
gvarner wrote:
The focal length of the lens does not change. The size of the image it projects on the sensor changes. Or one could say that the size of the image that the sensor receives changes. I’m not sure which one is more technically accurate but at least the focal length doesn’t change just because the sensor size changes.

Really all wrong. Image size unaffected.

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Jan 14, 2021 14:01:38   #
Abo Loc: Victoria Australia
 
User ID wrote:
How true .... that you’ve said it before.

Coupla more and it’s almost immortal.

You complained, repeatedly, that some context is missing. I didn’t find that part cogent or accurate, or even civil. It was clearly just a rant, so yes it’s edited. No loss of factual content occurred. That is what proper editing is all about.


Pffft

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