Componon-S lens has no front filter thread, is this what I need?

[Manuel_Angel]

Hi @bassquake,

In my opinion, with the Raspberry Pi HQ camera I don’t think you get much advantage by mounting the lens inverted.

Mounting the lens inverted makes sense in macro photography. With the HQ camera, even assuming you’re shooting small format film, the magnification ratio would be close to 1:1, so you wouldn’t have a noticeable advantage with the lens inverted.

You can take a look at the following thread where this issue is discussed:

Lens questions

In my project I used successively two lenses a 35mm CCTV of good quality a Schneider Componon 50mm For these simple lenses I can do the optical calculation: Sensor size → object example PI/HQ 6,29x4,70mm Frame size → image example S8 5,79x4,01 16mm 10,26x7,49 Optical magnification = image/object S8: 1,09 16mm : 0,6 For example in the simple case S8 we have about a magnification of 1 then: distance center lens → sensor = distance center lens-> film = 2*focal length of the lens My conclus…

In any case, you can always test the objective without inverting and, if you are not satisfied with the results, try inverted.

Regards