Showing posts with label collecting camera lenses. Show all posts
Showing posts with label collecting camera lenses. Show all posts

Camera Lenses



Pictures show different types of early camera lenses .

Welcome to Rare Antiques Collectibles Memorabilia.

The earliest camera lenses are particularly attractive with highly polished brass mounts and impressive waterhouse stops or rotating diaphragms.They are also extremely practical because with the aid of bellows attachment or extension tubes, they can be used on almost any modern single lens reflex camera.

Camera enthusiasts are of course always on the lookout for such goodies which can still be found under a pile of bric-a-brac in many junk shops.

Sometimes you will come across an old camera that has been damaged beyond repair. don't ignore it- the lens might be in perfect condition. If you ever come across such a specimen and find the lens easily detachable, whatever you do don't throw the camera away, no matter how damaged because the body can tell the historian much about the lens, period etc.

Very early lenses comprised a single meniscus lens, such as the one developed by W.H. Woolaston around 1812. However this was just before the invention of photography and was used in examples of the camera obscura.

One of the pioneers of phtography was daguerre and the first photographs he took used a doublet lens made by c.l. chavalier in 1830.This particualr design was improved by thomas grubb.

The first lens to be calculated by a mathematician was a portrait lens designed by j.petzval in 1840. this was improved upon by h.zincke in 1870.the petzval portrait lens is worth looking out for, because it was frequently set in large, cumbersome mount and for this reason is often overlooked.

The next major development was the rectilinear lens. but none of this lenses could be improved very much because of the constrictions imposed by the limitations of the glass of the day.

However in the latter part of the nineteenth century new types of glass were devloped and this led to P. Rudolph to design the fisrt anastigmat.these were called protars. the anastigmat can fairly be called the fisrt photographic lens of the modern type.

Apart from those i mentioned above, lenses woth looking out for are Steinheil's Periscope , H.W.Lee's optic merte's biotar and there are many more.

A basic lens will invariably have an aperture. This may be fixed as in the earliest lenses; waterhouse stops; arotating diaphragm( perforated discs); or the now universal iris diaphragm. You could specialize in lenses with specific apertures.

On the other hand, there's a lot of investment mileage in lens shutters. at one time there were literally dozens of types of shutter, ranging from simple spring and leaf to complicated pneumatic tubes and plungers. all of them are increasing interest to collectors.

Remember for all your collecting ideas always drop by Rare Antiques Collectibles and Memorabilia.
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