360mm lens on Ebony RW45

[ChrisN]

Hi folks - good morning! While I've been sleeping you have come up with a number of good suggestions for me - thank you all very much. Hopefully I'll have some success to report and show - cheers!

[Peter K]

Would a + Diopter filter, also allow for closer focusing ?

Might that be easier and cheaper than more extension - or would it introduce distortion of some kind ?

Add a diopter lens with the focal lengt of 2 m or 0.5 diopter power to the 360mm lens focussed at infinity and the point of focus will be changed from infinity to 2 m.

This is often used for real LF-pictures shown on the big screen of a movie theater

Of course this diopters are achromatic lens elements.

[Ken Lee]

Thanks Peter -

Drew - Sorry I was unclear.

I'm not exploring this as a viable option to make close-up images with long lenses - but merely to allow us to focus a long lens to infinity, when there is otherwise, "insufficient" bellows draw