B&H Photo carries Acratech GP ballhead.
Craig B writes regarding my review of the Acratech GP ballheads:
I've been following your blog and subscribing to Making Sharp Images and DAP for a few years now. I got into photography after buying a Canon Digital Rebel in 2005 so consider myself a relative newcomer. Despite not having the time I'd like to invest in improving my craft, I really enjoy your articles. I learn something new every time I read them. I appreciate the attention to detail. I especially appreciate the MSI articles about avoiding blur. They are worth repeated study.
I am glad to see you review the Acratech ballheads. I think that they don't get the attention they deserve. Maybe people are freaked out by their very unconventional design.
I have used the Acratech GP ballhead with my Canon 40d and 7d and a variety of smaller lenses and also with a Wimberley Sidekick for my Canon 500 and 100-400 for about 18 months now. It's lightweight, well built, and gets the job done. I have used it everywhere from my own backyard to the Serengeti and it has never let me down. Acratech doesn't quote inflated weight limits - they say that they can handle 25 pounds at any angle and that's what they do with little fuss or hassle. Their design makes cleaning a non-issue. They don't need lubrication or much maintenance at all to keep working.
I also use their separate leveling base which works great as well. Note that the ballhead can be flipped over and used like it has a leveling base for quick panoramas in a pinch but it's a bit awkward so I recommend a dedicated leveling base. I agree with another comment that notes the limitations of the gimbal mode - I would only use it in a pinch if I forgot my Sidekick. With a replacement lens foot for my 500/4 the weight is well centered over my tripod and I have lost little if any functionality over a full Wimberley. When you are limited to 15 kg of luggage on an African Safari and wish to actually have a few changes of clothes as well you will really appreciate the Acratech GP ballhead.
There are many quality options out there from manufacturers like RRS and Arca-Swiss but I recommend everybody at least take a hard look at the Acratech options.
DIGLLOYD: I’ve put everything I know about getting sharp results (or nice blur) into Making Sharp Images, whether one is shooting handheld or on a tripod.