HELP!!! Please.... - DPChallenge Forums

07/19/2014 09:45:12 AM · #1

My Nikon AF Nikkor 50mm f/1.4D lens has stopped working. And I can't figure out why. I used it not to long ago and it was fine but now it won't Auto-Focus...

It has to be something simple right???

pixelpig

Sony Alpha a55

Sony DT 1.8/50mm SAM

07/19/2014 09:59:05 AM · #2

Does it have a switch on the lens, to go between AF and MF?

07/19/2014 10:03:42 AM · #3

Chek to see if the apurature setting on the lens is set on the smallest aputure. It should be red or orange.

07/19/2014 10:23:33 AM · #4

Originally posted by Enlightened:

Chek to see if the apurature setting on the lens is set on the smallest aputure. It should be red or orange.

It's set on F/16 with the button down

07/19/2014 10:23:52 AM · #5

Originally posted by pixelpig:

Does it have a switch on the lens, to go between AF and MF?

Check...on AF

07/19/2014 10:26:09 AM · #6

It's like the Auto Focus motor is "stuck"...

I can use is manually but no in the "auto" mode

snaffles

07/19/2014 10:30:56 AM · #7

Sure it's not the camera? Have you tried other lenses with it?

07/19/2014 10:39:26 AM · #8

Originally posted by snaffles:

Sure it's not the camera? Have you tried other lenses with it?

yes, my other lens work fine...just this one

07/19/2014 10:51:40 AM · #9

Originally posted by Ja-9:

Originally posted by Enlightened:
Chek to see if the apurature setting on the lens is set on the smallest aputure. It should be red or orange.

It's set on F/16 with the button down

Is that the smallest? Mine goes to 22 but it's a 50mm F1.8.

07/19/2014 10:52:31 AM · #10

Do you have another camera to try the lens on?

07/19/2014 10:54:48 AM · #11

Originally posted by Enlightened:

Originally posted by Ja-9:

Originally posted by Enlightened:
Chek to see if the apurature setting on the lens is set on the smallest aputure. It should be red or orange.

It's set on F/16 with the button down

Is that the smallest? Mine goes to 22 but it's a 50mm F1.8.

yes

07/19/2014 10:55:17 AM · #12

Originally posted by Enlightened:

Do you have another camera to try the lens on?

no, my D80 hasn't worked for 2 years now and I haven't gotten it refurbished...yet...

07/19/2014 11:01:19 AM · #13

I hope you find a quick and simple solution. I'm sorry I couldn't help.

Olympus 17mm f/1.8 M.Zuiko

07/19/2014 11:01:45 AM · #14

Originally posted by Enlightened:

I hope you find a quick and simple solution. I'm sorry I couldn't help.

me too...thanks for trying

jgirl57

07/19/2014 11:40:52 AM · #15

Mine was stuck too for the last challenge I shot... I had my
metering wrong on the meter and in manual focus and not auto... hope its simple as that

PennyStreet

Olympus OM-D E-M1

07/19/2014 11:46:50 AM · #16

I'm not a Nikon user but I've had different lenses appear not to auto focus after having them on manual. Take the lens off the camera and put it back on, did you try that? Do it again. Make sure you give it something easy to focus on.

07/19/2014 12:04:46 PM · #17

Originally posted by PennyStreet:

I did, but I'll try again...that's what it seems like to me.

I had used it awhile ago to try some reverse lens stuff and the reversing ring got stuck on the lens??? We had a hard time getting it off the lens. But again, I've used it since then.

tanguera

Nikon AF-S Nikkor 17-35mm f/2.8D IF-ED

07/19/2014 01:15:46 PM · #18

Hopefully it IS something simple, but the truth is that those auto-focusing motors do burn out. I am having the same issues with one of my lenses, which except for the auto-focus, works just fine.

Just for good measure, clean the contacts on both the camera and the lens. Unlock the aperture ring on the lens and turn it back and forth a couple of times, then lock it back up at the extreme (22 usually). If none of these or the other methods suggested here work, it's likely the motor.

07/19/2014 02:18:16 PM · #19

Originally posted by tanguera:

How do I clean them and with what...never had to before...YouTube!!!

MelonMusketeer

Nikon D7000

Nikon MF 50mm f/1.4

07/19/2014 02:26:52 PM · #20

A pencil eraser works good for contact cleaning. That will likely fix the problem.
When cleaning the camera contacts, hold the item with the opening down, so that if anything rubs off, it will drop out of the camera or lens instead of into it.

I would also look to see if the AF/MF switch on the camera is on AF, but you said that your other lenses work fine, so that's not likely the problem.

If it's an "S" lens then the focus motor is in the lens. If it's a "D" lens, the focus motor is in the camera and there is a little screw drive that runs the focus in the lens.

Wishing you luck, with whatever it turns out to be.

Olympus 17mm f/1.8 M.Zuiko

07/19/2014 02:35:28 PM · #21

Waddy I think it's a "D" lens (see original post)

Which screw?

PennyStreet

Olympus OM-D E-M1

07/19/2014 02:56:22 PM · #22

Nikon AF Zoom-Nikkor 35-105mm f/3.5-4.5 D Try this lens... does the auto focus work?
I was told this would be the same as the 50mm. Both use the motor in the camera. Some of your newer lenses use a motor in the lens.

07/19/2014 03:26:33 PM · #23

Originally posted by PennyStreet:

it works as far as I can tell. It appears to be focusing (auto)

07/19/2014 03:27:19 PM · #24

Originally posted by Ja-9:

Waddy I think it's a "D" lens (see original post)

Which screw?

Hey folks...I might have a "screw" loose...lol (thought you'd get a laugh out of that...pfffffftttt)