Mirror Lenses - how good? Tamron 500/8 SP vs Canon 500/4.5L
Inspired by Herbert Keppler's praise of 500/8 mirror lenses in the August 2003 issue of "Popular Photography" I thought I'd dig my old Tamron 500/8 mirror lens out of the closet and test ...
Mirror lens
This is technically known as a catadioptric lens and has an unusual construction of mirrors and lens elements. As well as glass elements there are mirrors at the front and rear to fold the light as it enters the lens.
Mirror Lens
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Typically Mirror lenses are quite slow so you may live with the limitation of a fixed aperture.
Mirror lens
Techniques Glossary Mirror lens
This is technically known as a catadioptric lens and has an unusual construction of mirrors and lens elements.
-Out-of-focus highlights caused by a mirror lens. mirror lens element at the center of the front glass plate. In turn, the mirror lens reflects the light back through a hole in the concave mirror to a focus on the film.
MIRROR LENS - Lens with an internal mirror or mirrors that are usually curved, enabling comparatively-light lenses that are shorter than similarly-designated long focus lenses.
Mirror lens (Reflex Lens).
Lens in which some (usually two) of the elements are curved mirrors. This construction produces comparatively lightweight short fat long focus lenses. They cannot be fitted with a normal diaphragm.
MTF ...
Mirror Lens: A type of long telephoto lens that uses several mirror optic surfaces to "fold" the light path, resulting in a very powerful telephoto lens that is relatively small.
Mirror (Mirror lens)
A long lens that uses mirrors within its construction. This allows an extremely long focal length lens to fit within a relatively short barrel. Also known as reflex or catadioptric (cat).
(see Long lens) ...
Mirror Lens:
A lens, which uses mirrors, as well as lens optics to control and focus an image. Usually a telephoto lens.
Mist: ...
mirror lenses, telescope adapters, tracking facilities
microfilm archiving
microfilm cameras ...
Mirror lenses
Mirror, or catadioptric lenses are an alternative to more expensive long lenses. They have two major draw backs. First they are too slow. 500mm and 600mm ones have a maximum aperture of f-8 and it's fixed. You can't change f-stops.
Mirror lens is a lens system which uses mirrors within its internal construction. Most lenses of this type have a mixture of reflecting and refracting optics and are known as catadioptric lenses.
What about mirror lenses? I can get a really cheap telephoto that way! ...
The bokeh produced by a mirror lens.
Bokeh characteristics may be quantified by examining the image's circle of confusion. In out-of-focus areas, each point of light becomes a disc.
-Catadioptric lens - see Mirror lens.
-Catchlight - reflection of a light source in the subjects eyes.
-Cathode ray tube - evacuated bulb of glass containing pairs of plates between which electrodes pass.
You can buy a cheap manual focus mirror lens like a 500mm or a 1000mm and all you need is a tripod. That's it!
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Stan says: ...
My exterience with Smile was not a bad one. i got my F3 5 yrs ago, my 500 mirror lens 4 yrs. ago, and my girl's pentax 115 2 yrs. ago. All very cheaply priced, packaged well and arrived quickly. I've had good fortune 3 outta 3. Texas ...
Simply adhere a black paper disk to the center of a skylight filter and put it on your telephoto. You'll get the mirror lens look at zero extra cost. See the before an after shots here in these photos! ...
 See also: Lens, Photograph, Image, Focus, Light
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