what they mean by nikon-d?

blizzy · 27th February 2003

as in the topic
was looking at lens from sigma and tokina... they say its for nikon-d mount.
wats the d stand for?

YellowTang · 27th February 2003

The D letter denotes that the lens is able to pass focal distance of your object to the camera for the onboard computer. Almost all new lens for Nikon are either D or G (denotes that the lens has no apeture ring), and therefore for Sigma etc, manufacture lens that have the D denotation allow the camera's onboard computer to know the distance of the object you are taking. This is important for TTL flash, where distance determines the amount of flash compensation is needed

Nikkor Lens Apprev (Borrowed of a website I cannot remember where now.)

AF - this denotes all autofocus Nikon lenses. Lenses not designated as "AF" do not work with autofocus.

AF-D - this means that lenses have a built-in chip that sends distance data to the camera. These are the first lenses compatible with 3D Matrix Metering.

AF-G - these lenses have the same distance data chip as AF-D, but do not have an aperture ring. Like the AF-D lenses they are fully compatible with all D1-series and the D100. Some older Nikon models are usable only in shutter-priority or program mode with these lenses due to the aperture ring. The first lenses of "G" type were cheap consumer kit lenses, however "G" lenses are not inherently worse than "D" lenses. Some "D" lenses are of as low quality as the cheapest "G" lens, and a new "G" lens (AF-S 70-200mm f/2.8G VR ED-IF) is being built that will be one of the top-of-the-line lenses.

AF-S - these lenses, rather than using the in-camera AF motor, use an ultrasonic motor called Silent Wave for fast and silent autofocus. These motors are similar to Canon USM and Sigma HSM motors.

AF-I - these lenses incorporate an internal motor like the AF-S lenses, but the motor in these lenses are of an older variety and are not as fast or silent as the AF-S motors.

AF-N - these lenses have cosmetic changes over older versions of the same lens, otherwise they are the same as "AF" lenses.

IF - this designation is used for all lenses with internal focussing. Elements inside the lens are moved during focussing so that the front of the lens does not rotate. In addition to speeding up focussing, this also makes the use of a rotating filter (such as a polarizer) easier.

ED - this designation is used for all lenses with extra-low dispersion elements. These improve image quality by reducing chromatic aberrations (purple fringing).

VR - these lenses include an image stabilizer (vibration reduction). They work fully only with certain newer models that have five AF sensors, including D1 series and D100.

AI/AI-S - these lenses transmit maximum aperture and set aperture value to the camera to facilitate full in-camera metering. All AF lenses are also AI lenses. These lenses, like all not designated as AF, are manual focus only. Most modern Nikons do not operate with non-AI lenses.

AI-P - these lenses include a CPU (computer chip) that allows for use of program autoexposure. They were developed for the Nikon FA, the first Nikon 35mm SLR with full program autoexposure.

iceman · 27th February 2003

what does not having an aperture rings mean (other than it is physically not there)? the impact? thanx.

YellowTang · 27th February 2003

Not having a apeture ring also means the lens cannot be used with the older nikon cameras like FM2 etc

blizzy · 27th February 2003

would the tokina at-x 280 af pro af28-80 f/2.8 work on my nikon f50?

nikon f50

27th February 2003	#1
blizzy Member Join Date: May 2002 Location: Bedok South Posts: 618	what they mean by nikon-d? as in the topic was looking at lens from sigma and tokina... they say its for nikon-d mount. wats the d stand for?

27th February 2003	#2
YellowTang Member Join Date: Nov 2002 Location: Singapore Posts: 91	The D letter denotes that the lens is able to pass focal distance of your object to the camera for the onboard computer. Almost all new lens for Nikon are either D or G (denotes that the lens has no apeture ring), and therefore for Sigma etc, manufacture lens that have the D denotation allow the camera's onboard computer to know the distance of the object you are taking. This is important for TTL flash, where distance determines the amount of flash compensation is needed Nikkor Lens Apprev (Borrowed of a website I cannot remember where now.) AF - this denotes all autofocus Nikon lenses. Lenses not designated as "AF" do not work with autofocus. AF-D - this means that lenses have a built-in chip that sends distance data to the camera. These are the first lenses compatible with 3D Matrix Metering. AF-G - these lenses have the same distance data chip as AF-D, but do not have an aperture ring. Like the AF-D lenses they are fully compatible with all D1-series and the D100. Some older Nikon models are usable only in shutter-priority or program mode with these lenses due to the aperture ring. The first lenses of "G" type were cheap consumer kit lenses, however "G" lenses are not inherently worse than "D" lenses. Some "D" lenses are of as low quality as the cheapest "G" lens, and a new "G" lens (AF-S 70-200mm f/2.8G VR ED-IF) is being built that will be one of the top-of-the-line lenses. AF-S - these lenses, rather than using the in-camera AF motor, use an ultrasonic motor called Silent Wave for fast and silent autofocus. These motors are similar to Canon USM and Sigma HSM motors. AF-I - these lenses incorporate an internal motor like the AF-S lenses, but the motor in these lenses are of an older variety and are not as fast or silent as the AF-S motors. AF-N - these lenses have cosmetic changes over older versions of the same lens, otherwise they are the same as "AF" lenses. IF - this designation is used for all lenses with internal focussing. Elements inside the lens are moved during focussing so that the front of the lens does not rotate. In addition to speeding up focussing, this also makes the use of a rotating filter (such as a polarizer) easier. ED - this designation is used for all lenses with extra-low dispersion elements. These improve image quality by reducing chromatic aberrations (purple fringing). VR - these lenses include an image stabilizer (vibration reduction). They work fully only with certain newer models that have five AF sensors, including D1 series and D100. AI/AI-S - these lenses transmit maximum aperture and set aperture value to the camera to facilitate full in-camera metering. All AF lenses are also AI lenses. These lenses, like all not designated as AF, are manual focus only. Most modern Nikons do not operate with non-AI lenses. AI-P - these lenses include a CPU (computer chip) that allows for use of program autoexposure. They were developed for the Nikon FA, the first Nikon 35mm SLR with full program autoexposure.

27th February 2003	#3
iceman Member Join Date: Jan 2003 Location: near e4 Posts: 413	what does not having an aperture rings mean (other than it is physically not there)? the impact? thanx.