Phil's photos with the keyword: Mirror lens

Photographed with a Samyang 500mm f6.3 catadioptric (AKA "mirror") lens with manual focusing. These lenses are difficult to use but can produce good results when used in good lighting conditions with a fast shutter speed. Camera: Nikon D300S Software: Nikon Capture NX2.

My Samyang 500mm f6.3 catadioptric (AKA "mirror") lens fitted to my Nikon D300s. See previous photo ("Feral pigeon") for more information about these lenses. Photographed with a Sony RX100 camera and processed with Nikon Capture NX2. www.bhphotovideo.com/c/product/859194-REG/Samyang_SY500MF6_3_500mm_f_6_3_Mirror_Lens.html

A feral pigeon photographed on the flat roof of a building which the birds use as their "washroom" after heavy rainfall.......the water gathers here and remains for a day or two so it is often frequented by flocks of birds. This photograph was taken from a distance of approx. 50 yards / 46 metres using a manual-focus Samyang 500mm catadioptric ("mirror") lens which, on a cropped sensor (APS-C) camera has the equivalent magnification of a 750mm lens. These lenses are small, lightweight and cheap but they are also quite difficult to use. They have a single, fixed aperture (which is f6.3 for mine) and, as there is no electronic communication between lens & camera, most of the Exif information is not recorded. Camera: Nikon D300s. Lens: Samyang 500mm catadioptric. Processing: Nikon Capture NX2.

Another test shot, taken with a 500mm catadioptric lens (A.K.A. "mirror lens", "Reflex lens" or "Cat. lens") which uses mirrors instead of glass. These lenses are much smaller and lighter than the equivalent "normal" lens and they also cost a fraction of the price. They have a fixed aperture which is usually f8.0 (although the one used in this example is f6.3) and they have to be focussed manually. They provide a high magnification at a low(ish) price.... (Approx. £150-£200 / $233-$311) but they can be difficult to use without a tripod or other support, especially in poor lighting conditions. The resolution is not as good as the equivalent "normal" lens but they are much more convenient and will usually fit in a jacket pocket. This photo is not a great example of what these lenses can do as it was taken hand-held in dull weather conditions with the sensitivity turned up to ISO 400 to allow a faster shutter speed. In good lighting conditions, however, the results should be much better (see video below). These lenses do not record most of the EXIF information (details below). Camera: Nikon D300s Lens: Samyang 500mm f6.3 catadioptric "mirror" lens. ISO 400 Shutter speed 1/320 sec. More information about these lenses & video here: www.youtube.com/watch?v=6rRT6-aL6DM