canon's ftm lens

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What does it mean by full-time manual focusing?What are advantages? Canon introduced bar code program in some older models like eos10,but the program disappears in newer ones,why? What are the main difference between eos 1n and 1n-rs?

-- tokamak (sir-tokamak@hongkong.com), May 16, 2001

Answers

Lenses with the FTM ability enable the user to touch up focus after auto focus has been achieved. Lenses without this feature will damage the AF gears if you attempt to focus the lens while in AF mode. Check out Canon's website for an in depth comparison.

I'm not familiar with the bar code program, sorry.

-- Colin Miller (ckmiller@pond.net), May 16, 2001.


FTM is great, especially if you use custom function #4 (on the cameras that have that) to move the AF start to the * button. That way when you press the * button you get auto focus but are able to quickly manually focus as well. FTM works on the other bodies as well, but it's not as convenient.

The bar code program system was not used much. It wasn't very useful since the bar codes in the book didn't tell you what they were doing. This could have been a great teaching tool, but Canon didn't think it through very well. As it was, it just took over you camera and created more "idiot" modes.

The 1NRS has a fixed pelical mirror that is semi-transparent. Some of the light is directed up to the viewfinder and some to the film. This way the mirror does not have to move and the viewfinder does not darken when you take the picture. Since there is no moving mirror it can take pictures in very rapid sequence (10 fps). That's it's primary advantage. But it has several disadvantages as well.

-- Jim Strutz (j.strutz@gci.net), May 16, 2001.


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