Question about DX and FX

12 years 7 months ago #151605 by C05Mo
I was watching one of those Froknows videos and he mentioned that DX lenses are not good with FX cameras, but FX lenses are amazing with DX cameras. Does anyone know why this is? Is it something built in the lenses?


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12 years 7 months ago #151614 by A9 Photo
The DX will be no good on a FX but on the other hand you can spend the rest of your life very very happy using DX camera and lenses.

Lenses can be flawed on the perimeter of the image they impose on the film or sensor. On the other hand probably 99.9% of the human population never notices these flaws. Using a FX lens on a DX sensor means that the "flawed" perimeter is never even imposed on the sensor. Only the center of the image is imposed on the sensor. Using a DX lens on a FX film or sensor means that the perimeter lies more toward the center and does not even fill the film or sensor area.


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12 years 7 months ago #151619 by MLKstudios
DX is a smaller format (the chip is known as APS in regards to its size). Nikon lenses labeled DX make an image circle large enough to cover the APS sized chip but not large enough to cover a full frame (FX) sized chip.

You can use them however, in DX mode (cropping the larger chip).

:)

Matthew L Kees
MLK Studios Photography School
www.MLKstudios.com
[email protected]
"Every artist, was once an amateur"

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12 years 7 months ago #151623 by Henry Peach
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12 years 7 months ago #151625 by C05Mo

A9 Photo wrote: The DX will be no good on a FX but on the other hand you can spend the rest of your life very very happy using DX camera and lenses.

Lenses can be flawed on the perimeter of the image they impose on the film or sensor. On the other hand probably 99.9% of the human population never notices these flaws. Using a FX lens on a DX sensor means that the "flawed" perimeter is never even imposed on the sensor. Only the center of the image is imposed on the sensor. Using a DX lens on a FX film or sensor means that the perimeter lies more toward the center and does not even fill the film or sensor area.


That makes sense. I do a little more than hobby photography at the moment and I plan to grow, but the most I ever plan on doing is more of what I'm doing now. So it does make sense that I would never really need anything more than what I have now or whatever replacements it has in the future and really good glass.


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12 years 7 months ago #151626 by C05Mo

MLKstudios wrote: DX is a smaller format (the chip is known as APS in regards to its size). Nikon lenses labeled DX make an image circle large enough to cover the APS sized chip but not large enough to cover a full frame (FX) sized chip.

You can use them however, in DX mode (cropping the larger chip).

:)


Thank you. :thumbsup:


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12 years 7 months ago #151794 by Joves
Well I have a DX camera and use FX/Film lenses. I own one DX lens and that is the 10.5 Fisheye. I might get the 40mm Micro though. I plan on eventually getting an FX camera so this is why the majority of my lenses are FX. When you buy, do so with your goals in mind as far as what equipment you plan on having in the future.


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