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When using extension tubes…

Started 10 months ago | Questions thread
East Gothia New Member • Posts: 22
Re: When using extension tubes…

DanRN wrote:

Atho wrote:

Is there an easy way to calculate the distance to which a lens will focus after adding a 10 or 16mm extension tube or both? (I know I will lose infinity focus, whatever the h€|l that means)

Hint. It must be really easy because I’m really stupid. No point in offering any complicated equations because I will just lose the will to live.

See if this page is of any use:

http://extreme-macro.co.uk/extension-tubes/#calculator

It is still very useful, the laws of physics are not updated that often fortunately! I'm sort of old school and like to check if what I see/want is realistic. Starting to test different lenses with bellows  with a large adjustment range is easier if you can figure out what to expect (and what is "out of range") like when you have a specific object you want to catch and get a reasonable result in the end.

... and then there is all the software in the camera doing the actual focusing and the lighting ... and ... and ...

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