----- Original Message ----- From: "John Lovda" <[EMAIL PROTECTED]> > This probably was asked already in the past. Has > anyone done any serious comparison tests to see how > significant the improvement (if any) the EF 2X > Extender version II is over the version I? The 1.4X > changes strictly involved gasketing and internal > anti-reflection flocking. The 2X supposedly has a new > optical design.
Hi John, My evidence is purely anecdotal and based on field experience. I used the mkI on my 300/2.8IS very rarely as I found the racetrack images shot on print film a little too soft, too often. I updated about six months ago and am much happier with the result. I have gone back to shooting an angle I had previously avoided which is shown in this example: http://www.timmunro.com.au/images/MCRidedaycurrent/22802158_28.jpg This is too low res for you to get an idea of the mkII optical performance, but I am enlarging these shots taken with the 300/2.8IS + 2x mkII up to 20" x 30" without complaint. I still use it only when necessary and stick with the 1.4x if possible, but there is a definite improvement visible in the upgraded 2x, as well as the advantage of weather sealing. I did see at least one report giving a more detailed approach and the thumbs up to the new one but I cannot remember where. Regards, Tim www.timmunro.com.au * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
