EOS 3 misreading film dx code anyone?

[joanna_heel]

Has anyone with an eos 3 encountered this problem? Can anyone offer a

possible cause? At a wedding (oh god no) I was alarmed when my

shutter speeds were well off on AV so I retreated to my car. On

checking the film speed the camera had set ISO of 3200 with a kodak

gold ISO 200 film. I rewound the film (fortuately only got to frame

11), loaded another and it was perfectly fine. I have never used any

custom functions on the camera, and The camera is 1 year old, kept in

a clean enviroment etc. Is it posssible for the camera to have mis

read the film mid way through the roll or would it have been from the

start? I will have to get my film push processsed but 4 stops?

Can a film have a faulty DX code? Would appreciate any feedback on

this thanks

[yakim_peled1]

Could the contact be dirty?

 

Happy shooting,

Yakim.

[joanna_heel]

Thanks Yakim, I would be surprised if this were the case as I do keep it all clean etc, and the next roll was detected fine. Jo

[digitalirony]

Hi Jo,

 

The DX Codes for ISO 3200 and ISO 200 are very similar (see these links http://www.bythom.com/dxcodes.htm and http://utopia.knoware.nl/users/eprebel/Imaging/Photography/DX/DX.html) with only one contact difference between them. It could be possible that the contact on the film canister was faulty or that there was a small item of dirt or something that was sitting on the contact when you loaded the camera that created a contact for position 4 which should have not been conductive.

 

If there is a problem with the camera itself you have the ability to change the ISO from the automatically selected one so it isn't a problem that would warrant major panic as long as you checked the speed whenever you loaded the camera.

 

Try loading a few loads of ISO 100 and ISO 200 when you have a chance to do some recreational photography and see what happens. Chances are that the fault was with the canister and that everything will be okay.

[digitalirony]

hmm, the links should have been:

 

http://www.bythom.com/dxcodes.htm

 

and

http://utopia.knoware.nl/users/eprebel/Imaging/Photography/DX/DX.html

[joanna_heel]

Thanks Jon for your advice I can see what you mean with the similarity between the two. Its put my mind at rest, I will certainly be more thorough checking ISO settings during a wedding now. In 20 years of photography it never has been an issue. Jo

[robert_johnson15]

About ten years ago, I bought a brick of Kodak T-Max 400 36 exp on which all the casettes had a "correction" noted on the cartridge. It looked like one of the lower positions, numbers7-12, had been stamped over with dark green ink in a sqaure shape to change the position from conductive to non-conductive. I just assumed that Kodak had printed some wrong and they didn't want to toss them all away!

 

Robert Johnson

[denis_connolly]

This (as far as I know) has only happened to me once and that was quite recently with my newish Dynax 7. A roll of Portra 160 registered as ASA 40. Luckily the body flashes the ISO briefly when loading so I was able to override the setting. Goes to show it's good to keep an eye on the technology.

[athinkle]

Yeah, the 3 shows the ISO for about 3/4 of a second after you load the film and close the back. I always watch it because I'm paranoid to begin with, but now I'll pay extra close attention. Velvia doesn't grow on trees after all...