Disable Auto Focus on Digital Rebel EOS 300D?

Hi,

Is there any way to turn off auto focus on a Canon EOS Rebel 300D?

Thanks,
Michael

the switch that says AF/MF, switch that to MF (manual focus)

Yup, and just to be really specific, look for a switch on the lens barrel marked with two positions: 'AF' and "MF'. Setting this switch to 'MF' will disable auto focus.

ninja edits! ^

To be utterly specific, if you have a very old lens, the markings are AF and M.

apersson850 wrote in post #16536234
To be utterly specific, if you have a very old lens, the markings are AF and M.

And if it is even older it won't have any marking because it is always MF.

But then it doesn't fit, if it's a Canon FD or similar. But it's true that what you say applies to new lenses too, if it's something like a Samyang or Leitz.

Thanks guys -- I now feel utterly stupid. Jeez.

spacecadet1968 wrote in post #16536820
Thanks guys -- I now feel utterly stupid. Jeez.

No worries. We've all been there on some issue. Take comfort in the fact that you brought a smile to alot of people's face for a moment.

In stead of switching off you can play around with custom functions to invoke AF exactly when you want or need it.

hennie wrote in post #16537901
In stead of switching off you can play around with custom functions to invoke AF exactly when you want or need it.

yes but that isn't always the best option. Sometimes your eyes are more accurate and a lot of photographers love shooting all manual, which is why companies like Leica are still around

The problems with standard cameras, or rather their focusing screens, is that they are optimized for bright viewfinders, not accurate focusing. Thus you can't really tell the difference if you are using an f/1.4 lens, as long as you are focusing manually within the depth of field of about an f/4 setting. The rest is guesswork, or at least guesstimating by rocking the lens focusing ring back and forth and trying to settle somewhere in the middle of the best focused range.

But the AF system can measure better than that, provided its properly calibrated.

Just one note, BBF (Back Button Focus) is not an option on the 300D/Rebel, and there is no custom function menu. There is a hack to enable the 10D firmware to install on the camera as they are basically the same inside, with a couple of minor exceptions. With the hack you get the Cfn menu from the 10D and most functions work. The only exceptions seem to be related to AF, metering modes and flash. So although you can then select BBF it doesn't work and the shutter button still starts AF. YOU also can't change the AF mode away from AI, change the metering modes or select second curtain flash, you can set some of them but they have no effect.

Alan

If you want it i still have a copy of the undutchables hack. It worked treat on mine.

David