1:2 reproduction ratio - Photography Help Forum

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Q. 1:2 reproduction ratio

Asked by Kurt Pas (K=2267) on 5/4/2004

I'm looking to by a better lens for my Nikon F75.

On some of the lensen i foun a parameter like "maximum 1:2 reproduction ratio" what does this mean? And what means better quality? a bigger number or a smaller?

Matej Maceas

(K=24381) - Comment Date 5/4/2004

I think it means maximum magnification. 1:1 would mean that you can focus close enough to make an object that is 1cm in real life take up 1cm on film. 1:2 would mean that an object 1cm in real life would take at the most 0.5cm on film.

So if you want to take macro images, buy a lens that goes to 1:1. (Alternatively, you could buy extension tubes, or simply reverse a 50mm lens.) If you want a general purpose lens then 1:2 will be fine.

Eveline Shih-Pitcairn (K=4406) - Comment Date 5/7/2004

Frequently, a better quality lense has a 1:1 ratio and a larger f-stop or aperture than lower quality, less expensive lense. This means the that a lense that can open to a maximum of f 2.8 is better than one that opens to f 5.6 because it lets in more light.

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