I need a lightmeter for 517/16 Zeiss Ikon Nettar and I bought the camera for 30 dollars. I am surfing the net and I dont know how old they were , Weston Light Meters goes from 60 dollars. I found many new digital lightmeters at architecture, surveying and construction people online shops. They advertise like 20 000 lux. I dont know what is lux or candela and how to transform them in to camera use. They come with a moon dome and I dont know it is good for MF Format Photography also.

If anyone shed some light, I would be grateful.

Thank you,