Luminous Landscape Forum

Equipment & Techniques => Cameras, Lenses and Shooting gear => Topic started by: DavidPerelmanHall on May 07, 2010, 11:00:09 am

Title: Going Beyond 1:1 Macro
Post by: DavidPerelmanHall on May 07, 2010, 11:00:09 am

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

Title: Going Beyond 1:1 Macro
Post by: Slobodan Blagojevic on May 07, 2010, 12:05:20 pm

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.

Title: Going Beyond 1:1 Macro
Post by: Doug Peterson on May 07, 2010, 12:07:13 pm

Quote from: 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

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

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

Doug Peterson  ()
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Title: Going Beyond 1:1 Macro
Post by: DavidPerelmanHall on May 07, 2010, 03:11:57 pm

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.