From various LFP fora and glancing at many hyperlinked (related) web pages I understand that pin-hole images can be obtained with 'standard' 4x5 cameras.

However, I've tried unsuccessfully to mock up such a system with my Calumet CC401 camera.

Two 'lenses' were made - one with a 1mm drill, the other with a small sewing needle.

According to what I have 'read' the large hole should focus within the lenght of my extended camera rail
and
the needle hole focus should be with the camera standards almost fully closed up.

Total failure - I get no image and no indication of a latent image within or without the focussing range(s).

Question - does the extremely small aperture (ie f300???) prevent an image being seen on the GG screen??

Question - if so, how does one view an image?

Question - and how does one determine that the image to be recorded is in focus?

I'm more than happy to express my ignorance, but my curiosity outweighs any embarrassment.

[Moderator, if this posting is on the wrong forum please move]

regards

Tony