Camera Lenses and Video Lenses Specifications on GlobalSpec

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Help with Camera Lenses and Video Lenses specifications:

Iris Control


	Iris Control
	Your choices are...
	Fixed Iris		No provision for adjustment for light conditions.
	Manual		Iris is adjusted manually. Typically for stable or consistent lighting conditions.
	Auto DC Drive		Iris is automatically adjusted via a dc signal output by the camera. No circuitry in the lens, just the motor driven by the DC signal.
	Auto Video Drive		Iris is automatically adjusted via a video signal output by the camera. Circuitry in the lens itself accepts the video signal, then conditions it into a iris adjustment signal.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Optical Characteristics


	Focal Length:		Focal length is the distance from the optical center of the lens system to the image sensor plane.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Adjustability:
	Your choices are...
	Fixed Focal Length
	Variable Focal Length
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Aperture Range (F-Number):		F-number relates to the aperture, or light opening, of the lens as controlled by the iris. The lower the F-number, the greater the aperture. The F-number conforms to the international aperture scale in discrete values: F1, F1.4, F2, F2.8, F4, F4.6, F8, F11, F16, etc.
	Search Logic:		User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.

	Minimum Focusing Distance:		Minimum effective focusing distance.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Zoom Capability?		Lens magnification may be adjusted.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Zoom Magnification:		Magnification ratio.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Motorized Zoom?		Zoom is driven by a motor rather than manually adjusted.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Lens Mount


	Lens Mount
	Your choices are...
	C-Mount		"C-mount" lenses have a flange back distance of 17.5mm vs. 12.5mm for "CS-mount" lenses. C-mount lenses are required for C-mount cameras; CS-mount lenses cannot be used with a C-mount camera due to the shorter back focal distance. C-mount is a 1" diameter, 32 threads per inch mounting thread.
	CS-Mount		Either C-mount or CS-mount lenses can be used on CS-mount cameras; a C-mount lens requires a 5mm adapter or adjusting the camera for C-mount lenses. Because of the shorter back focal distance, CS-mount lenses can only be used on CS-mount cameras. CS-mount is a 1" diameter, 32 threads per inch mounting thread.
	S-Mount		Smaller mounting configuration used in devices such as PC cameras and board-mounted cameras. Utilizes a M12x0.5 thread.
	F-Mount		Bayonet mounting configuration standardized by Nikon.
	K-Mount		K-mount is a bayonet mount standardized by Pentax.
	Other		Any unlisted mounting configuration.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Application / Specialty


	Application / Specialty
	Your choices are...
	Aspheric		High quality optics consistent across image area.
	Pinhole		Small diameter lens for insertion into tubes, holes, or other small areas.
	90° Pinhole		Small diameter lens with a right-angle bend.
	Close-up		Short focusing distance for close-up photography or imaging.
	Wide Angle		Very wide field of view for broad image capturing.
	Other		Any unlisted specialty lens.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

General Features


	Filter Thread Diameter:		Diameter for attachment thread for auxiliary filters.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Included Filters?		Lens comes with filters for different wavelengths or other optical effects.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

	Anti-reflective Coating?		A thin-film interference coating designed to minimize light reflection on the air / glass interface. AR coatings are the most common interference coatings, and are used on such items as camera lenses, eyeglasses, and other optical instruments.
	Search Logic:		"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Optical Format Digital imaging optical format is an approximate measure of the diagonal size of the imaging area. A lens must match the optical format of the imaging sensor or be larger, i.e. a 2/3" lens would work with a 1/2" or 2/3" sensor but not with a 3/4" sensor.


	Optical Format:		Sensor size is usually an approximate measure of the diagonal size of the sensor.
	Your choices are...
	1/7"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 1/7 inch.
	1/6"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 1/6 inch.
	1/5"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 1/5 inch.
	1/4"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 1/4 inch.
	1/3"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 1/3 inch.
	1/2"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 1/2 inch.
	2/3"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 2/3 inch.
	3/4"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 3/4 inch.
	1"		Digital imaging optical format is a measure of the size of the imaging area. Optical format is used to determine what size lens is necessary for use with the imager. Optical format refers to the length of the diagonal of the imaging area. The optical format is 1 inch.
	Other		Any unlisted size or optical format.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Dimensions


	Diameter:		Horizontal width of rectangular body, or diameter of circular or barrel-type body.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Length:		Length of body; this is typically the distance along the lens axis.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.