Calumet C1 Fresnel lens

[Thierry Schreiner]

Good evening to all of you.

I just fell in love again, as I unpacked my "new" Calumet C1 a few days ago.

I would like to fit it with a Fresnel lens. Does anyone have experience of how to fit a Fresnel lens to a Calumet C1 focusing screen, which company does supply this piece of equipment, respectively which Fresnel lens from another camera make fits the C1.

Thank you very much in advance for your guidance.

Best regards from France.

[Percy]

What is this..."fresnel" lens? Just got an Orbit (same as C1), and my glass is...well...frosted on one side.