>From: [EMAIL PROTECTED] (Marco Kost) >Hm, as far as I understand the extension tube would cause a loss of light, and also I > heard that it is a little bit different to focus when using an extension tube combined > with a zoom.
Light loss might be a factor (see manuals for extension tubes), but TTL will compensate. I don't know if slower shutter speed or faster film/digital ISO would work for you, as you did not specify subject matter, lighting conditions, hand-held vs. tripod, etc. Focusing will be different with either close-up accessory lens or extension tube. As I understand it, both might limit range of focus (i.e. no infinity focus), whether with zoom or prime lens (not important in close-up shots, though), so I would suggest manual focus either way. I have no evidence to support this, but I suspect more advanced/pro shooters use extension tubes than use close-up lenses. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
