> [EMAIL PROTECTED] wrote: > I just picked up a Canon EF 100-400/4,5-5,6L IS USM. Great lens, but > heavier than my 75-300 IS. > My problem is that I can't lock the head tight enough. I think the solution > is a ball head. I'm using a Bogen 3443 #441 carbon tripod with the Bogen > Magnesium 3D Head 3437. I've always used a 3D head, but I think the > 100-400 is overloading it. The head moves no matter how tight I crank.
Hi Gerry, The 3437 = 460Mg head has a rated load capacity of 3kg, which should be adequate to hold the EF 100-400. I have a 3025 = 056 head which has the same load rating, and it has no problem. In fact it is probably sturdier than my higher-rated ball head 3413QR = 308RC. Are you using the tripod mount ring on the lens? Have you tried to reverse the QR plate, so that the weight of the lens and the camera tends to TIGHTEN rather than loosen the head. Alternative heads? How about a 3160 = 200 fluid video head (which also takes 200PL plates)? Or even a 3421 = 393 bucket-handle long lens bracket? I have to admit that the 393 does make the 100-400 look very impressive :-) http://groups.yahoo.com/group/eos/files/jloke/Lzoom393.jpg Cheers Julian Loke * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
