kelster said:Definitely...maybe at times more than 2 stops...however...I've no experience in this...
shorty said:no, you wont loose stop. The extension tube is just pulling your focus distance closer to your object. BUt use it with tc can have different magnification depending on how you combine them.
Another way to take macro pic is by coupling two lens, it will definitely look different. But beware of the glasses contact distance with your object! And dont let the ratio of the coupling lens be too large because you might having situation the object touching your lens' glass.
finkster said:I believe he is refering to an extension tube for macro work, not a teleconverter.
Well you lose infinity.anonymous said:The purpose of having extension tube is to reduce minimum focusing distance. For example if you can only focus at 2 meters with a 300mm lens, with extension tube you will be able to focus at a shorter distance, probably 1 meter or 1.5 meter depanding on which tube you are using.
Ok guys, back to my question : what are the disadvantages for using extension tube?
shorty said:no, you wont loose stop. The extension tube is just pulling your focus distance closer to your object.
ST1100 said: