07-16-2011, 12:11 PM
[quote name='Brightcolours' timestamp='1310810845' post='10061']
It is all about MFD, nothing else. So... if you want more magnification, you select the lens that is shorter. With a 12mm extension tube you then will get closer. The TS-E 24mm f3.5 II is not a good candidate, as it is too long and focus will move past the front element <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />.[/quote]
....but just to be sure, I just tried the 12mm tube. There's still a 2cm gap.
It is all about MFD, nothing else. So... if you want more magnification, you select the lens that is shorter. With a 12mm extension tube you then will get closer. The TS-E 24mm f3.5 II is not a good candidate, as it is too long and focus will move past the front element <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />.[/quote]....but just to be sure, I just tried the 12mm tube. There's still a 2cm gap.