Lense's maunual

[CelticSoul]

Does anoyone know where I can find a soft copy of my lense's manual? I've lost my Canon 100mm f/2.8 USM Macro user manual.
Thanks.

[20droger]

Call Canon service and very politely explain that you lost your operating instructions and could they please send you another or tell you how to get one.

If you come across as abrupt, rude, profane, or demanding, I can virtually guarantee you'll get nothing. They do not owe you the information.

Alternatively, perhaps someone here on the forum will graciously send you a copy.

[superdiver]

Why do you want the manual?

[Jon]

IIRC this request came up before; apparently the macro lens manual contains a table of exposure compensations to be applied at varous magnifications.

[sblais]

IIRC this request came up before; apparently the macro lens manual contains a table of exposure compensations to be applied at varous magnifications.

:o I'll have to dig up my manual! Never had a problem so far with exposure... must be beginners luck for this new lens :D

[CelticSoul]

There's a swich on my lens. It changes between 0.31mm and 0.48mm (not sure about the value, I dont have the lens with me atm). I want to know what does this switch do, that's all. IIRC that's the minimum focus length, but why there are 2 of them?
Thanks.

[Pete]

There's a stack of information here. Some of it may be what you're looking for.

http://www.mir.com.my/rb/photography/hardwares/classics/eos/EF-lenses/EF100mmf28MACRO/index.htm

[sblais]

There's a swich on my lens. It changes between 0.31mm and 0.48mm (not sure about the value, I dont have the lens with me atm). I want to know what does this switch do, that's all. IIRC that's the minimum focus length, but why there are 2 of them?
Thanks.

That switch helps to reduce the autofocus time. If you want to focus from 0.31m (that's meters, not millimeters at you stated) you should use that setting. If the object is a bit farther, then you may use the 0.48m option and the focus will be achieved faster. Hope this helps :)

[mavericksupersonic]

I have this manual. For exposure it states:

Magnification and Effective f-number:

the aperture displayed by the camera assumes that the focus is set to infinity. The actual aperture (effective f-number) becomes darker (effective f-number increases) at closer focusing distances (magnification increases). This does not cause exposure problems for normal picture-taking. However, for closeup photography, you cannot ignore the change in the effective f-number. When you use a hendheld exposure meter to set the exposure, you must take into account the exposure factor shown in the following table:

Magnification 1:5 | 1:3 | 1:2 | 1:15 | 1:1
Effective f/No 3.6 | 4.1 | 4.6 | 5.0 | 5.9

ExposureFactor
for 1/2 stop +.5 | +1 | +1.5 | +2
cameras

ExposureFactor
for 1/3 stop +2/3 | +1 | +4/3 | +5/3 | +2


*the correct exposure for a close-up shot largely depends on the subject. Therfore, try to bracket the exposure for the same subject.
*Using aperture-priority AE (Av) or Manual (M) for the picture-taking mode is recommended.
cameras

[CelticSoul]

@sblais, thank you :)

@mavericksupersonic, wow, thanks for the info. I was about to ask for the magnification info
:)