Iain
Iain created a new topic ' Configure equipment DSLR lens tab, Focal Length > 300 not allowed' in the forum. 1 year ago

Which is annoying as I use a 400mm F5.6 and sometimes with a 1.4 extender giving a focal length of 560.

Seems to be an arbitrary restriction.

I am putting it in as a refractor, which means I have to put in the aperture calculated from the F stop and focal length.

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