Edit postReport this postReply with quotestacked 25mm canon extension tubes, help!!!

[pauloanjo]

If I stacked 2 canon extension tubes of 25mm, but from diferent versions (the early EF25 and the new EF25 II), will I have any problems with autofocus on my 300mm f/4 IS lens. Do I need the 2 of the same version, so they work properly?

How about quality o the images of the 300mm f/4 IS lens + 50mm of extension tubes? Does any one have a photo exemple to show?

Need fast repply.

best regards,

Paulo Anjo

[pauloanjo]

sorry, this is just to correct my early repply

[Alfred Forns]

Paulo When your working at those extreme magnifications with 50mm of tubes you want to be in manual ... and even better using a focusing rail !!!