Hi,
I'm new to both this forum and large format photography, so please excuse any newbie language or mistakes.
I have just discovered a vintage brass Petzval style lens that belonged to my grandfather and I need to get some advice on it, so I thought I'd ask the experts! Here are the questions I have, and if any of you can help me in answering them I'd be hugely grateful.
1. What type of lens is this (Petzval, magic lanter etc) and how can I tell?
2. What camera would this be suitable for (full, half, quarter plate etc)?
3. How old would a lens like this be?
4. What sort of price is this kind of lens worth?
5. It was in a pretty grimey condition and I (perhaps foolishly) cleaned it and polished it up a bit. Would this have lessened it's value?
Below is a list of information about it, and I have attached some photos. Hope this helps.
- Brass construction
- Lens glass is all clean, and in very condition.
- Lens and mounting ring threads are in perfect and smooth working order.
- 'Tangent' focusing mechanism is well cleaned and running very smoothly.
- 65mm - width at far lens end
- 80mm - length (from mounting plate to end of lens when fully extended)
- 40mm - front and rear lens glass diameter
- 78mm - diameter of mounting plate
- 30mm(approx) - aperture/entrance pupil diameter
Many thanks!
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