Stuck at f/22 in manual mode... - DPChallenge Forums

Canon EF-S 17-85mm f/4-5.6 IS USM

09/20/2005 11:05:59 AM · #1

I went to manual mode with the power switch in the second position to operate the large dial on the back for f-stop. The camera is stuck on f/22 and no matter what I do (in manual only) I can't change it, almost like the power switch is just in the first "on" position. I can get all the f-stops in aperture priority. The dial works for thumbing through photos, menu, etc. Removed the grip batteries and the clock battery for a couple minutes to reset the camera, same thing. I lightly cleaned off the contacts on two of my lenses, nothing. Asked Canon tech support, they said do what I already did. Anybody else ever have this problem or thoughts?

henry_buckle

Canon EOS-20D

09/20/2005 11:23:05 AM · #2

Probably no help but strangely enough i had the same problem two days ago - conspiracy? I just removed the lense and put it back on while the camera was still on and in Manual mode.

kirbic

Canon EOS R5

Canon RF 24-70mm f/2.8 L IS

09/20/2005 11:25:42 AM · #3

Hmmm, yeh, I thought about this a bit and kept coming back to the lens, though if you can still control it in Av mode, that's a condrum. I know you reset the cam, but is there possibly something set in a custom function that cnaged the control behavior and is persistent? I'm admittedly grasping at straws...

hsteg

Fujifilm X-T20

Canon EF 70-200mm f/2.8L USM

09/20/2005 11:27:03 AM · #4

Its happened to me before too, but it just kinda took care of itself. Weird.

Canon EF 16-35mm f/2.8L USM II

09/20/2005 11:38:49 AM · #5

Thanks a lot for the replies. Henry, I tried your suggestion of taking the lens off with the camera still on, nothing. Kirbic, I asked Canon if there was a custom function that would lock the aperture they said nothing should lock the f-stop in manual besides the power switch. Hopefully it clears itself like hsteg says. Weird. Thanks again.

colyla

Canon EOS-50D

09/20/2005 11:55:48 AM · #6

You might check with lentil....she had something similar like this happen when she bought a new canon rebel and it ended up being something wrong with the camera. Can you take it back to the store you bought it from and have them check it?

henry_buckle

Canon EOS-20D

Canon EF-S 17-85mm f/4-5.6 IS USM

09/20/2005 11:57:35 AM · #7

btw, i also turned changed the AV flash sync speed back to default before i removed the lense as it was the last change made immediately before i had the problem

Matthew

Canon EOS-5D Mark II

Peleng 8mm f/3.5 Fisheye MC In M42 Mount

09/20/2005 12:34:24 PM · #8

My camera went a little mad and did that kind of thing when it was particularly hot and humid a couple of months ago - don't know if you are experiencing any strong weather conditions?

09/20/2005 01:23:04 PM · #9

Originally posted by legalbeagle:

My camera went a little mad and did that kind of thing when it was particularly hot and humid a couple of months ago - don't know if you are experiencing any strong weather conditions?

Ya, funny you should say that. It was 3:30am and raining, and I was trying to get some lightning shots. I was covered in a mall parking lot so it didn't get wet, but the humidity was up. I did manage to get a couple lightning bolt shots though. I'll post later when I get home.

Mr_Pants

SiPix Blink

09/20/2005 01:40:20 PM · #10

Originally posted by Telehubbie:

I imagine that you've already tried this, but have you tried 'working' the switch? It could be dirty contacts. If you continue to get problems, perhaps you could try the DPReview forums for specific camera issues.

Hope it gets better soon.

09/20/2005 01:56:21 PM · #11

Originally posted by AJAger:

Thanks. Ya, in AV mode I switched the selectable autofocus to the dial instead of that little joystick (and you have to have the switch in the second position for the dial to work) and the dial worked so I figured it's not the switch itself.

Sony 16-50mm f/3.5-5.6 E-mount

09/20/2005 02:17:24 PM · #12

I GOT IT!!! Even though Canon said to take all the batteries out to reset the camera (and that didn't work), just for fun I tried the "clear settings" in the menu and that did it. It's still kind of wierd why that happened when nothing in the settings should lock the aperture. Oh well, thanks for all the thoughts and advice.

jmsetzler

Sony Alpha a6000

09/20/2005 02:37:21 PM · #13

Is it possible that your lens is incompatible? I haven't seen a post in this thread stating the make/model of the lens. I know some older sigma lenses are not fully compatible with the newer canon cameras.