Thanks for data! I have already added to the list on page 7.
Thanks for data! I have already added to the list on page 7.
What a beauty and thanks for sharing..Originally Posted by fabphoto73
I have a lens to add to the list:
Petzval,No 2482, incl "cup" with one washer stop screwed onto it.
I measure focal length to be 187mm and image circle 205mm at infinity. This likely makes it the 18cm portrait lens covering 1/2 plate. Front element is 50mm making it F/3.7
Serial numbers engraved on the front element and one of the back elements. Front element also has rice writing "Lerebours Secretan" on the edge as well as a pencil mark that I can't decipher. See attached photos. Base on the serial numbers this would seem to be around 1846.
Richard
Added - one of the oldest known. It looks like the 1/2 plate size was the main Petzval made at this time 1845/47. Ideal for CdeVs and small sliding box cameras.
Another early Lerebours added to the list. 1/2 plate no 2467 1845/6.
Included in a UK auction to-day - a star amongst a lot of microscope/telescope parts!
Last edited by Steven Tribe; 19-Oct-2022 at 12:56. Reason: Read 2467 as 2406!
A clearer image of the above mentioned lens - No. 2467 - 1/2 Pl. 230mm F4.5. Rice writing on both sides of front achromat and on one side of both rear elements. Also Lerebours Et Secretan etched on edge of front achromat. With cup insert & two stops. Always a risk when buying from an auction house & only managed to coax some additional pics out of them at last minute. Most likely now the oldest lens in my collection beating my Ross No. 543 by 2/3 yrs.
I had a good feeling about it - but was unsure about the lens hood insert being present. But as I already had the same lens, but a bit earlier, I rationed myself to a £220 maximum. Increasing Auctioneers’s fees, postage, packing, and Import VAT makes the UK auction scene too expensive.
I’ll add the new information to the entry for 2467 which I started a few weeks ago.
I bought L&S Petzval 4229. Focal length is about 8 inches (rough measure) and seems to cover 1/2 plate. The retainers holding the elements in the housings are stuck and I haven't tried using a chemical to loosen them. (I did get the element housing loose and cleaned & lubed them with silcone.) No waster stop cup but there is an older looking baffle with something like f8/f5.6 aperture affixed inside skillfully made of brass. I'm guessing this was added in the 1860s rather than cutting the barrel. The lettering is "LEREBOURS et SECRETAN a Paris." Note the "et" and the small case "a". The focus knob is present and is a simple flat design with just single knurling around the edge, not double. Brass has been through hell but the glass is immaculate. No separation at all, no chips or marks. Should I assume manufacture date of 1847-48? Intend to mount lens on a lens board and see what infinity coverage looks like on my 5x7 Korona, and actual FL.
Kent in SD
In contento ed allegria
Notte e di vogliam passar!
I added this 1840’s lens to the serial numer registration as soon as it was listed. Obviously, I don’t draw attention to listings here, but listing of interesting lenses do occasionally disappear without trace - Along with their serial Numbers and images.
Nice to see the lister found his way to this thread. There are a lot of early L&S Petzvals this year!
The ring screw lens retainers in lens cells can be very strange! I have some times had problems, but suddenly discovered that a light flat palm friction contact/ movement on the edge worked.
Recent acquisition - No. 2664 - 10cm in height. 4.2cm glass(3.9cm visible) 164mm F4.2 - covers 5x4” format without the cup stop(some vignetting with). ‘2564’ rice writing on both sides of front achromat and on one side of each rear element. Yes ‘2564’ not ’2664’! Perhaps a workshop error? Also ‘Lerebours Et Secretan’ rice writing on edge of front achromat. Cup insert has one screw in stop rather than the more usual slip on retaining ring that holds stops.
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