Darlot Carte de Visite Camera lens 5cm f5

Lens Data

Lens Unit

Lens Photo

レンズ構成 : ペッツバール型
製造番号 : なし
レンズ製造 :ダルロー( レンズのコバに手書きで記載)

Lens composition = Petzval type
Serial number : nil
Lens name : Darlot (written on the edge of glass)

Lens Impression

ダルロー(Alphonse Darlot 1828-1895)の銘が入った19世紀のCarte de Vista(1度に複数の画像を得るマルチプル・カメラ)用のペッツバールレンズです。



このレンズはそうしたCarte de Vistaカメラから外されたものですが、元の姿はよくわかりません。

This small Petzval lens is one from a Carte de Vista Camera (taking multiple pictures at one time) which has a manuscript ‘Darlot’ on the edge of a glass.
Please refer an image of Carte de Vista on the last photo above.

It was very hard to get multiple photographs in the period of early photography. Photograpers and models were exhausted to repeat their work which takes rather long time and process even taking single photo.
It was a natual requirement to raise the idea to take multiple images by dividing one original plate into several parts.

It is known that such multiple cameras are invented around 1854, and the number of images at one time increased between 4 to 36.

This lens was taken from such a Carte de Vista Camera, but I could not identify the camera itself.
This focal length is 5cm and aperture f5. It is rather rare to find a Petzval design lens with such short focal length.
Referring photos of the Lens, pleas find that the main lens is only center narrow part. Other stepwise part is the body to mount on Leica L39.
I often get questions during taking photo in town

  Photos with Darlot 5cm f5 Petzval lens
Yoyogi Park, Kamakura
代々木公園/Yoyogi Park



This lens has neither Aperture blades nor Helicoid. All photos are taken at f5.
To make focus with Sony αis no problem with an adapter equipped with helicoid. But I needed to loose lens mounting screw when using Leica M-P with checking through Live-view finder.
Thanks to the Petzval composition, the description around center is very sharp. It appears rater strong influence of curvature of image which is the typical characteristic of Petzval composition around peripheral area, which shows the shape of bokeh as the equilateral triangle of Coma aberration is extended circumferential.
I think it become an excellent middle range lens if you use in APS-C format.