Petzval type lenses

It is fairly easy to known the maximum aperture of a Petzval lens,simply take the measurement for the width of the actual glass and divide this into the focal length.

Comments

Post a Comment

Popular posts from this blog

Leica llla + Leitz Summar 5cm F2 Royal Navy's Property during WW1 WWll

Image
 A.P. 8665  PTT 8665 engraved on  and top plate  Summar F2  barrel A.P. = Admiral Property [url]https://scontent.flhr14-1.fna.fbcdn.net/v/t39.30808-6/425375423_2547791248736405_6685535335024311750_n.jpg?_nc_cat=105&ccb=1-7&_nc_sid=3635dc&_nc_ohc=ERtQUC-X2VMAX-mqFFk&_nc_ht=scontent.flhr14-1.fna&oh=00_AfA33S74k__FsLi1OdEm0lQuugAGQWERgVf-ALyiucIFWw&oe=65E421F[/url]  Last Year  2023 Leica Photographical Auction  (Lot 205) Estimate : Euro 16,00-2,000 Hammer Price : Euro 43,200  My Collection  [url] Leitz Summar 5cm F2 (youtube.com) [/url]
Read more

GLANZ Micro T-M & Zoom Teleshot Adapter

Image
By fitting this Glanz Micro T-M to the lens of ordinary SLR you can convert it into a true Telephoto lens. A standard 55mm camera lens so adapted becomes a 385mm Telephoto Lens. GLANZ T-M Zoom Lens adapter Use a Zoom lens With Zoom Teleshot it gains a zooming range from 350mm to 1,000mm and remains compact and light in weight. It is even possible to use a tripod. Interchanging cameras is made readily and easily by a simple change of back Adapter ring. This is completely adaptable with other cameras (like Canon,Nikon ,Minolta and so on ) with different Mount adapters
Read more