Going Beyond 1:1 Macro

[DavidPerelmanHall]

How can I determine the magnification ratio if I do the following;

1) mount an 85 to my D3, then reverse mount a 50 to that

2) do the above and place a PK-13 in between 85 and body

3) do either 1) or 2) and add 250D or 500D diopter


Thanks

[Slobodan Blagojevic]

Shoot a ruler and calculate. The ratio compares the size of the photographed object with its size on the film/sensor. If the size is the same, you have a 1:1 ratio or "life size".

In your case:

If the ruler shows 36 mm, you have a 1:1 ratio.

If the ruler shows 18 mm, you have a 2:1 ratio.

In other words, if the ruler shows X mm, divide 36 mm by X and you will get the ratio.

[Doug Peterson]

How can I determine the magnification ratio if I do the following;

1) mount an 85 to my D3, then reverse mount a 50 to that

2) do the above and place a PK-13 in between 85 and body

3) do either 1) or 2) and add 250D or 500D diopter

You may find some of the technical background of high-magnification macro I wrote helpful.

http://www.captureintegration.com/2009/08/25/extreme-macro/

Doug Peterson
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[DavidPerelmanHall]

Thanks guys.  Doug->amazing stuff to look at. Ruler measure technique is just way too simple for me to have thought of it.   I'll try it out for sure.