This can help the camera set flash exposure more accurately if the subject occupies only a small part of the frame, or if you're shooting into mirrors or very light or dark subjects. All lenses introduced since 1992 have been "D." Let the camera know the distance at which the lens is focused. "D Type" (Distance Information): 1992 top
#NIKON LENS FILTERS SERIES#
Only AF-D lens that has been updated recently is the 28mm f/2.8D AF, whichĪround 1998 was updated from the original old Series E design of 5 elements The designation isn't used, unless a major redesign happens. Today's AF lenses are certainly newer than the AF-n from the late 1980s,
#NIKON LENS FILTERS MANUAL#
Real manual focus ring (AF) and a version from the late 1980s with a rubberįocus ring that felt like one from a manual focus lens (AF-n). Often used to delineate the difference between an earlier lens with no Photographers preferred conventional wide, rubberized focus rings. Them big and grippable when that would just make them get in the way when Nikon presumed no one would ever touch them, so why bother to make Lenses of the mid-1980s had thin, hard manual focus rings that everyone To distinguish between older and newer versions of some of the earliest It is often normal to see a bit of diaphragmĮven when set to maximum aperture at some ends of the zoom range. The diaphragm ought to be in the same place when set to the same aperture on the lens, or on the camera.ĭiaphragm while you zoom. Slide film with two or more lenses you wish to compare. Unless the camera is set to a couple of third stops down from maximumĬamera designer don't fret over this. Of motion, even at the lens' maximum aperture, you may tend towards underexposure. The camera and you should see twice as much motion. Them move a little bit when pressing the DOF button. Set the camera to f/3.2 and you ought to see At the next 2/3 stop down you ought to see twice as much.Īn f/2.8 lens set at f/2.8 you should see no motion of the diaphragm when At the first 1/3 stop down setting you ought to see a little bit When you set the maximum aperture of the lens you ought not see any blade Press the DOF button on a modern AF camera and see what happens. Now go to M or A modes and select differentĪpertures. There ought notīe any aperture blades visible. Stuck because they base their AF system on compatibility with manual lenses.īecause the mechanical tolerances are quite tight and can lead to a thirdĪt this yourself. This is a limitation of the Nikon AF system with which Nikon is Therefore, some lenses may give slightly different exposures than In this internal adjustment will vary the exposures you get with that This is a separate adjustment from the the correlationīetween the aperture ring and diaphragm noted above. This pin's position and the opening of the diaphragm also needs The aperture by varying the precise position of the spring-loaded automaticĭiaphragm pin that pops out of the back of the lens. Only if you have had the lens servicedĪre you ever likely to see a problem. Meter coupling prong for use on pre-AI cameras.ĭiaphragms are usually adjusted correctly at the factory and usually more Today it's primitive compared to the Canon AF system, howeverīack in the 1980s it allowed Nikon to retain compatibility with the manualģ.) The slotted screw in the middle of this photo is turned by an AF cameraĪI-s, and work great on manual focus cameras. It rotates to move the lens in and outįor focusing. That pokes out of the camera like the Alien and couples with the slotted More at Nikon Lens Compatibility.Īre mechanical, like F, AI, and AF while others are optical, like EDĪre focused with a mechanical coupling between camera and lens. The only real gotcha has been with G lenses, which are just about useless on manual focus cameras. No big deal, even today you can have prongs added. The only two gotchas in 50 years have been in 1986, when AF lenses lost the prong needed to couple to pre-1977 cameras. As we will see, today's AF lenses are still AI-sĪnd F mount, even though they don't always list that. One usually can ignore the earlier letters, even Retain the previous lens features, so the newest lenses have long lists Each time they add a new lens feature they usually Most of today's lenses are compatible with ancientĬameras, and most ancient lenses can be made to work fine on today's digital cameras. When it comes to compatibility among cameras and lenses of different decades. January 2020 Nikon Reviews Nikon Lenses All Reviews