lsquare wrote in post #9922844
From experience, I find that in most non-windy days, using the central column isn't an issue. There's no perceivable loss in sharpness. I can't see it. Obviously the situation would be different in windy situations.
J,
It's too late for me to switch again. I went from a Gitzo GT1530 to GT1541T. I have no intentions of switching again at least for the short-term. Looking back now, I probably should have got the Gitzo GT1541. Not only was it cheaper, there were plenty in stock throughout Hong Kong at the time. I won't be back in Hong Kong for a while and there's no way I'll buy a Gitzo tripod in the US when it's cheaper in HK and you can negotiate the price (not sure if you can always negotiate, but I always try conversing in Cantonese with those guys to form a bond).
Of course I can kneel, but it's not always practical. IIRC, I think I'm a bit shorter than you. I'm roughly 5.85 feet tall and I'm already in my mid-20s. Not that I'm suggesting that I'm old, but I'm not getting any younger by the day. Constantly bending my back may not be an option as I get older.
I'm 6' even and 50 so I can tell you, while I can do the bending, it's not fun. That said, your height is more compatible with the 1540T than is mine.
That's also what I mean when I say that Gitzo has a hole in their lineup with the travelers - they need to be able to go taller WITHOUT using the column. Feisol can and it's a winner position for them unless Gitzo comes up with an alternative.
If you really want to go lightweight, then its the 0 series and then you kneel for sure.
I can tell you that there is a real difference in tripods in Gitzo's line and their ability to dampen vibration. I did some pretty extensive testing that was similar to the testing that Leica magazine did back in 1/06 to figure this out. Basically, if you use the magnification factor of the max focal length that Gitzo specs on each of their tripods, you can use the ratio of that to figure out the ranking of the tripods and their ability to damp vibration. So, if the tripod is rated at 200mm, then it is only able to damp 1/2 the vibration that one that is rated 400mm can. I can also tell you that when you use exposures that are subject to softness from vibration, and when there is vibration present, it absolutely will make a difference of which tripod you select and whether the column is up or not. Any tripod, in the absence of vibration, will provide a sharp image - it's the case of vibration present that matters.
Without getting into it much more, it seems that one of the biggest factors, for a given quality or layup of CF, is the diameter of the tubes in the legs. Also, for what it's worth, with my Gitzo's that I tested, hanging a mass from the hook had no impact. Gitzo tripods (at least my two) are very immune to vertical vibration up from the feet (which is what the mass would help) - so much so that it is pretty much a waste of effort to do it.
Also interesting, but not of much importance with travelers, is that the large heavy aluminum tripods are equaled in performance by the Series 2 and for sure Series 3 that weigh a small fraction according to the Leica article. At least so for rotational vibration (i.e. like from wind) which is the most difficult to control
J.