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DPChallenge Forums >> Hardware and Software >> Lens Multiplier?
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09/12/2004 12:26:15 AM · #1
I was wondering if somebody could clarify a question for me.

I've heard and read in a couple of places that digital cameras have a multiplier of 1.6 when speaking of lens length. For example, if you have a 500mm lens, once the multiplier is added, you are effectively running a 800mm lens.

Is this accurate?
09/12/2004 12:31:51 AM · #2
Digital SLRs have either 1.5 or 1.6. Depends on the camera. But yes, that's accurate.

Clara
09/12/2004 12:32:39 AM · #3
Well, it depends on the camera.

1.6x crop factor holds for the 10d

But other's have different factors.
09/12/2004 12:35:01 AM · #4
Originally posted by RobCoursey:

For example, if you have a 500mm lens, once the multiplier is added, you are effectively running a 800mm lens.

Is this accurate?


Technically no... the lens doesn't change at all. It's more like taking a picture into PhotoShop and enlarging/cropping it to a 1.6x factor. So you lose all of the surrounding pixels because the image sensor is smaller than a 35mm frame (by a factor of 1.6).

Ideally, I'd much rather have a full size sensor. Let *me* decide if I want to crop/throw away the pixels. Of course, such cameras exist ... and you can buy one if you have lots of $$$.

09/13/2004 11:41:39 AM · #5
most canon's are 1.6x, some are 1.3 (the 1d think?) and the 1Ds is "full-frame" (eg: no crop)
all the nikon bodies are 1.5x crop
the Kodak DCS Pro is "full frame"
and the Fuji S2 i THINK is FF as well, but don't quote me on that

09/13/2004 12:10:18 PM · #6
Canon 300D - 1.6x
Canon 10D - 1.6x
Canon 20D - 1.6x

Canon 1D - 1.3x
Canon 1D mkII - 1.3x

Canon 1Ds - 1.0x (IE. no crop)
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