Apo Camera Lens at Wallpaper

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Apo Camera Lens. Apochromatic lenses use a group of three lens elements to reduce colour fringing (as above). The term 'apochromat' gets used in various ways, and now it means various things.

LEICA APOTELYTR 13.4/180mm SLR 3CAM 35mm CAMERA LENS CLEAN f=180
LEICA APOTELYTR 13.4/180mm SLR 3CAM 35mm CAMERA LENS CLEAN f=180 from cameratique.com

I never did any systematic testing, but in everyday use, the difference in results was indistinguishable for me. If using a lens which has in the list, the camera’s display will indicate the converted exposure information. Apochromatic lenses use a group of three lens elements to reduce colour fringing (as above).

LEICA APOTELYTR 13.4/180mm SLR 3CAM 35mm CAMERA LENS CLEAN f=180

So, here is the situation. Years ago, it just meant that a lens focused three different colors on the same plane and at the same magnification at a given focusing distance. Maximum contrast, high transmission and excellent colour. A fundamental problem with camera optics is that the light that forms the image on the film or sensor.