Filter thread
Most SLR cameras, some digital and a few compacts have a threaded ring at the front end of the lens. This is used to attach coloured and special effect filters as well as other accessories to alter the light that reaches the film.
Filter thread
Edit Read more: Glossary, Camera parts
Edited by Awcam
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Filter thread
Techniques Glossary Filter thread
Most SLR cameras, some digital and a few compacts have a threaded ring at the front end of the lens.
40.5mm filter thread. Buy a step-up ring to allow use with normal filters.
Five-bladed diaphragm stops from f/8 to f/32 with clicks at each full stop. Of course you may set it to any aperture.
OR ...
Check the filter threads. It doesn't take much for those threads to lose their usability; a small ding and you can't get a filter on, or off, your lens.
The lens has a 72mm filter thread and you can lock it in the 18mm position to carry it around.
It is the first Sigma lens I bought after my disaster with the 18-50mm f/2.8. The 18-200mm really works well.
Tokina 24-200mm AT-X 242 AF - Travel Lens ...
This special adapter attaches to the filter thread on the front of a lens and makes it possible to attach the lens in reverse.
A reversing ring is similar to a step-up or step-down ring, but it has male filter threads on both sides. This allows you to attach one lens in reverse to another lens. The macro lens reversing ring is the cheapest way for macro.
First, as mentioned, the stacked lens needs to optimally have the same diameter filter threads as your main lens.
(ie: the filter threads of the 50mm lens are attached to the filter threads of the camera-mounted lens by means of a special lens-reversing or macro-coupling ring) You won't be able to adjust the aperture of the reversed lens if it's an EF-type lens, ...
Macro dioptres are magnifying glasses that screw onto the filter thread at the end of a lens and enable it to focus on very close objects.
There was the first ring which screwed into the lens' filter thread and duplicated the EOS mount at the back end of the lens. This ring interfaces with the EOS mount on the camera body.
- M46 filter thread allows direct attachment of wide and macro lenses
- Dimensions: 152mm wide, 110mm high, 86mm deep (including port)
- Weight: 660g including a camera
- Internal flash can be used directly (with supplied diffuser) ...
The X1 has no easy means for attachment of a lens hood (as there's no filter thread on the lens barrel), so its flare resistance is pretty important.
Nikon pro lenses outer filter threads are designed to not interfere at all in the angle of view of the lens with a Nikon polarizer or a Nikon clear filter; but this is not necessarily true in consumer lenses.
Better digicams can accept wide-angle or telephoto add-on lenses via filter thread or adaptors. Very useful for the serious photographer.
AVI
A movie in Windows AVI format. Many digicams have the ability to capture movies, albeit with limited quality.
Add-On Lens - Some lenses have filter threads on the front edge that allow you to mount an auxiliary wide angle or telephoto lens in addition to the standard lens.
There is also a Heliopan wide-angle linear polarizer (front element is larger than than filter thread to preven vignetting) in 67mm, as well as Nikon a 52mm polarizer which are both used only for LF. All round filters are in B&W soft plastic boxes.
Add-on Lens - Some point and shoot digicams have a filter thread on the front of the fixed lens that will enable the attachment of an additional lens. Usually wide-angle or telephoto.
 See also: Camera, Lens, Light, Photograph, Filter
  
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