Question about Nikon D40x Digital Camera
The other day, all the sudden the camera will not autofocus. I can focus manually, but when on autofocus mode, you push shutter button down halfway and the illumination light comes on without focusing and when shutter pressed all the way, the camera does nothing.
This happened to me once on a D70... When mounting the lens, make sure it clicks in all the way when turning counterclockwise. Also it may be worthy to note that both the lens AND the camera must be set to autofocus mode ("A" switch set on both lens and cam).
Posted on May 14, 2008
I took my lens of and put it back on (to make sure that wasn't the problem). then i switched the lens to manual and took a few pictures. i switched back to automatic, and then repeated the process...when i was back on automatic focus, i held the button down half way and it focused and then i tried taking a picture and it workded!!
Posted on Aug 21, 2009
I had the same symptoms as described above with My D40x in the late summer using the 18-55mm zoom that came with the camera. The auto focus feature seemed to be working just fine with the other supplied lens in the kit (55-200mm zoom), leading me to believe the lens was where the problem ultimately lie. Because this lens was still under warranty, I shuffled up a few bucks to send it in to Nikon (the Service Center in NY). They repaired the lens and sent it back (no charge, under warranty) within 2 weeks. The paperwork they returned with the lens indicated that they had discovered a broken 'auto focus gear' and replaced it to restore auto-focus functionality for my lens. I have to wonder if there isn't a common defect in these lenses, based on the number of others posting here that they run into this same set of symptoms.
Posted on Dec 29, 2008
Only the middle focus bracket is a cross-hair on the D40, and the outer two are line. Try focussing by turning the camera slightly to the left or right. And, also ensure that you have the lens selector slide set to A for autofocus. The D40, by the way, does not have it's own internal focussing motor, and only lenses with their own motors will autofocus, but manual focus is possible with all lenses.
Posted on Dec 06, 2007
I had the same problem and after following the instructions on this website, my problems were solved: http://www.bythom.com/autofocus.htm
Posted on Aug 07, 2009
What lighting conditions were you working in?
All camera autofocus systems are only able to operate down to a certain light level. The fact that the focus assist light came on suggests that the light level was low. However, the focus assist light only has limited range. It won't help with distant subjects.
However, to assist focusing (in poor light conditions especially) you should place the active focus area over a high contrast edge when you are focusing. You can keep the shutter button held half way down (which locks the focus in the default AF-S mode, not in AF-C, where this won't work) and recompose the picture when you've focused.
If your camera won't focus at all in good light, with an AF-S lens, with a high contrast subject, you may have a fault, and should speak to Nikon or your dealer.
Hope this helps!
Posted on Nov 29, 2007
Have a D40 not even a year old. Worked great before. Now it takes a few pictures in auto-focus and then it stops taking pictures in auto focus. to continue taking pictures i either have to switch to manual or remove the lens and then put it back on to resume taking some more pics in auto-focus until it stops again and i have to follow this pattern for as long as i desire to take pictures with it. deffinatley a defect of some sort. great camera overall but Nikon better fix this if they want to keep their market share.
Posted on Dec 19, 2009
Same here...the camera does nothing and sounds REALLY loud when focusing. Of course it's not under warranty anymore.
Posted on Jun 28, 2009
I HAVE A D40 ABOUT A YEAR OLD SAME PROBLEM... I RELEASED THE LENS TURNED IT LOOSE ABOUT A !/2 TURN AND RESEEDED IT MAKING SURE IT LOCKED AND THE PROBLEM WENT AWAY
Posted on Nov 03, 2008
Here's something very simple:
1) Go to the Custom Setting Menu (Pencil Icon) and press "reset". This should remedy the issue.
2) Reconfigure the settings you may have previously used on that menu.
3) Go on with your shooting!
Posted on Jun 17, 2008
Out of the box, I couldn't get a center focus shot. Out of desperation I reset the camera (push info and magnify buttons at the same time). That solved the problem.
Posted on Mar 12, 2008
Make sure the lens you are using is a "DX" series lens. I know of many instances where the camera has been either sold or used without the correct ("DX") type lens. Autofocus will not work, but most other functions will. Manual focus is possible with the non-"DX" lenses. This seems to be a little-known quirk of the D40/D40x models.
Posted on Jan 29, 2008
SOURCE: nikon d40 autofocus
Look on the left side of the lens. Make sure the button is on A for auto focus and not M for manual. OR not stuck in the middle. Hopefully that will solve the problem.
Posted on Jul 21, 2008
SOURCE: nikon d40 autofocus
Dan62, your camera will never be able to focus on objects with no contrast. The manual specifically states this. However, you can put the AF marker over something with some contrast, half press the shutter, so that it will focus, hold the shutter button halfway while you recompose the shot, and then press it all the way.
A note to others using the D40/D40X/D60 that are having problems with autofocus: please remember that this camera will not autofocus with mechanically driven lenses. It will only AF with "AF-S" or "AF-I" lenses.
Posted on Sep 05, 2008
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