hi i have just bought a sigma 180mm macro which i will undoubtedly have to tripod mount ,i have a manfrotto 055xprob tripod ,but which is the best head for it without breaking the bank ,i have been told to get a large ball and socket any other ideas with a budget of roughly £50-£60 u.k pounds
I think you have to ask yourself what type of use you intend to put your 180 macro lens to. Are you going to do proper 1:1 macro with it? in which case the advice given by Overread is sound, as he knows far more about true macro photography than me.
I have the Sigma 180 macro too (excellent lens!), and almost always use it with a Giottos ball head, similar to the one in the link below:
http://www.warehouseexpress.com/buy-Giottos-MH1300-652-Series-II-Ball-Head/p1025891?cm_mmc=GoogleBase-_-Tripod-Heads-_-Ball-Heads-_-Giottos-MH1300-652-Series-II-Ball-Head_1025891
Actually, mine is the smaller model than that one, and actually has a lower max weight limit of about 10-12kg. I bought it a couple of years ago, really to tide me over until I could afford a proper ball head like an Arca Swiss, Markins or Really Right Stuff. However, I've been so pleased with the cheap Giottos that I haven't bothered to upgrade it yet.
I would never pretend to be a 'proper' macro shooter. My subjects are usually butterflies, dragonflies and the occasional reptile or amphibian, always under natural light (no flash) in the field. Therefore I would consider my subjects as 'close-ups' rather than true 'macro'.
The ball head allows me to very quickly locate the target in the viewfinder, lock it very quickly, then concentrate on manually focussing. Yes, there is a tiny bit of creep, but it's rarely a problem, especially once I discovered that with canon DSLRs like the 40D and 50D you can easily move the manual focus point away from the default centre of the screen using the rear 'toggle button', allowing you to fine focus on the head/eye etc.
I've tried other cheaper ball heads from Manfrotto etc, but none of them have the ease of use and smooth movements of the Giottos. It really is an under-rated bit of kit. Another pro-ball head feature, if using a tripod on uneven ground, is that it is so quick and easy to level, with the ease of just one knob!
I've also used mine with the Canon 100-400 IS zoom, very successfully, though mine is pushing its limit with this heavier lens. It also works surprisingly well with a travel scope. Mine has been modified by adding a Wimberley C-12 clamp, allowing use of Arca-swiss type plates which I have fitted to all my lenses & scope.
Something else to consider,
Steve