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krzkrzkrz
08-21-2006, 10:54 PM
Back in the day, my parents used a Nikon F80 (SLR). Until today, they still have the camera and 2 lenses. The first lense came with the camera (I'm guessing that it was part of the package/kit). The second lense is a optical zoom lense.

The camera was bought in the early 1990's, sort of to say. I cannot provide more specific details, i.e. model type, because the lenses are not within grasp. At least for the time being.

Provided the limited information above, could anyone say whether the lenses would be compatible with the new Nikon DSLR's today (say the D50, D70, etc)?

Educated/wild guesses are welcome.

coldrain
08-22-2006, 04:26 AM
I think it must have been early 00's, not early 90's. The F80 was introduced in 2000. But yes, the lenses will work. It depends on what lenses they actually are if they are very worth while on a DSLR.

krzkrzkrz
08-28-2006, 12:04 AM
What about the conversion factor?

Could you explain what this term "conversion factor" means. And if this is somewhat related to using a lense from an SLR on a DSLR.

Will there be any singnificant influences?

coldrain
08-28-2006, 04:34 AM
Not conversion factor but crop factor. The sensor is smaller than the film for a 35mm film SLR.

It is like you cut the edges of the photo, cropping it. Hence the term crop factor of the sensor. The sensor is 1.5x smaller, so the crop factor is 1.5x

If you have a 28-80 zoom, the field of view compared to what you would get on the F80 is 28 x 1.5 = 42 and 80 x 1.5 = 120mm
So it would behave like a 42-120mm lens.

My bet is the other lens is a 70-300 lens?

K1W1
08-28-2006, 04:36 AM
Basically because of the way a DSLR CCD is sized there is a 1.5x crop factor applied to all lenses used on DSLR bodies.
If you use a 150mm lens on a film camera it will have the same field of view as a 100mm lens used on a DSLR.
Imagine a 35mm negative. A lens must allow a circle of light the equivalent of the diagonal of the negative for the whole image to be exposed. A CCD (or CMOS) used in a DSLR is considerably smaller than a 35mm negative so when the same circle of light is applied there is a lot a wasted light around the edges and only the centre section falls on the CCD hence the "crop factor".

wh0128
08-29-2006, 05:08 PM
does this crop factor relate to ALL DSLR's, or does Nikon or Canon make full sensored cameras? I can't seem to find if there are any, atleast for Nikons.

coldrain
08-29-2006, 06:08 PM
Most DSLRs have a crop factor of 1.5x (Nikon, Pentax, Sony, KM) or 1.6x (Canon). Olympus and Panasonic have DSLRs with a crop factor of 2x.
The Canon EOS 1D Mark II (/N) has a crop factor of 1.3.
The Camom EOS 1Ds Mark II has a crop factor of 1, so does the Canon EOS 5D. These two are called full frame DSLRs.