http://www.nikonchat.com/f1-8-nikkor-lens/
nikkor dx AF 50mm camera?
Hi, I'm new here and I have a question about a lens. I have a D5000, I was looking at buying the Nikkor AF 50 mm f1.8D. Now I know this is not auto-focus with my camera, but I thought that if I ever upgrade my camera I can use this target. Now I know that is the Nikkor 35 mm f1.8 DX and I know many would recommend the 50mm. However, just curious if I were to buy 50 mm How I can use manual focus? (I noticing a bunch of numbers on the lens and not too sure what you mean) Oh, and I know that has a 50mm 1.8 AF-S version, but I would still like know about the AF one. Thank you.
Older manual focus cameras used to have something called "ground glass" screens that magnify the center the lens, which helped to focus. Unfortunately, since the advent of auto focus, all this has disappeared in modern cameras. However, the D5000 has a Focus Assist function. If you look through the viewfinder, you should have a green dot on the bottom left of the screen. If you do not see it – press the shutter button halfway down to activate it. Basically, even though the camera does not focus the lens, the autofocus system is active and the indicator flashes green when the camera is out of focus, and the point when the focus is fixed. Simply turn the focus ring on the camera to the green dot does not flash – viola, your target will be in focus. The other ring on the lens you are considering opening. This is a holdover from manual SLR, and for any modern camera, this control is best done from the camera. The reason for this control exists is to maintain compatibility with older cameras – or the odd time you plop the lens in a ring of investment and the need to adjust the aperture. However, for all modern Nikon SLR D-SLR, you park the aperture ring to f/22 and leave it there. There is even a lock the lens to keep the ring moving. If you move the ring, off the aperture control of the camera, and an error (the error in this case is saying you have to go strictly manual exposure). So 99% of all uses of the camera, the aperture is set at f/22 and left there. This is the reason Nikon is moving to the "G" lenses, which has no aperture control ring.
Nikon COOLPIX P300 12.2 CMOS Digital Camera with 4.2x f1.8 NIKKOR Wide-Angle Optical Zoom Lens and
Nikon News