Canon Lenses Extender

question about digital SLR lenses?

Hi I have a Canon 500D sensor body and I say if I have a 1.6 and 70-200mm lens will tell 112-320 mm is not it? What if I have an extension of 1.4 means 156-448? it seems wrong to fast it will be to light? The goal is 70-200 LF / 4 is to Thank

Yes, your numvber are correct. The Canon 1.4 dilution is generally regarded as fairly good telephoto 70-200 F4 as L. Much better than 2.0 dilution for you. The comment on the loss of speed is very important, depending on what you get her. Also, remember the golden rule hand in hand with a stone – the shutter speed of at least a length crop factor X 1/focal. Where appropriate, full extension to 448, you must be firing a shutter speed of at least 1 / 500 – something easy to the days of sun, a little more difficult at other times. You must be ready to hit the ISO a bit if the firing, for example, and encourage certainly a monopod if you do that.

Unboxing Canon EF Extender 2x II vs Extender 1.4x II – Comparison