Re: Best dual axis bubble spirit?
All those camera shop branded ones are utter toys. So is all that Amazon crap. But admittedly, most folks aren't wiling to pay for anything of serious machinist quality, but that's the kind of source where you'd look. A decent torpedo level has a strong casting and a machined prime edge. Stabila is a good brand at reasonable price, well below machinist pricing. Stanley and other home center brands usually aren't reliable enough for the scarecrow of the Wizard of Oz. I've seen em all sectioned in half in order to sort marketing BS from fact. Quite a bit goes into a good level, even a tiny one. Or for an assortment of basic options, go to the appropriate page of the McMaster online catalog. If you need cheap, a gravity pendulum angle finder will be way more accurate than any inexpensive level. I always kept one of those in my architectural shooting kit.
Any serious small twin-vial level like the Starrett cross-test bubble level is designed to be so precise that you'd go nuts trying to level it on any camera or tripod surface anyway. A simple single-tube Starrett pocket level is more realistic, and won't cost you a hundred bucks. If you want a little acrylic cube level, I again recommend Stabila, but won't go into the "why" of it here. Let's just say that for every level you've ever seen, I've probably sold a thousand professional ones, and know the fine details of manufacturing which make a real difference.
But unless your purpose is for sake of stitching exposures, any architectural nitpickiness falls apart due to the fact that film seldom sits precisely square in the holder itself, and buildings are seldom truly level and plumb. True squaring should be done during the printing step. The newest, tallest, and most expensive highrise building in SF is fully 18 inches out of plumb top to bottom, and the error can be seen with the naked eye, especially in relation to adjacent tall buildings. No camera level can cure that; even the engineers are having a hard time figuring out how to correct it. But lawyers are sure having a happy field day over it.
Re: Best dual axis bubble spirit?
Double-check affordable bubbles. I recently replaced the bubble level on my tripod. Although I bought it from an “authorized parts vendor” it appears to be a cheaply-made Chinese product. Looks right; fits right. But is 2 degrees off from center.
Re: Best dual axis bubble spirit?
for horizontal flat surfaces a turntable bubble level is fairly accurate. Usually less than $30 . you can get some larger center bubble spirit levels with degree markings.
Re: Best dual axis bubble spirit?
Unless you can adjust them all to a single reference, camera bubble levels rarely agree.
Re: Best dual axis bubble spirit?
Re: Best dual axis bubble spirit?
Quote:
Originally Posted by
Christopher Barrett
The broader the base of a spirit level, the greater the accuracy. I don't place much stock in shoe mounted levels. In 25+ years of shooting architecture for a living, I've always relied on a "torpedo" level... placed along the groundglass for plumb and on the top of the format frame for level.
My two cents.
With my 4x5, I just lay it flat along the top of the standards to check the levels. I don;t bother inserting it in any of the "shoes". Frankly, my eye works best for the most part.
Re: Best dual axis bubble spirit?
Only Linhof could ask $90.00 for a $9.00 made-in-China level and get people to buy it. Gotta love them.
2 Attachment(s)
Re: Best dual axis bubble spirit?
To "needle" Drew, checkout this EDA precision level with a spec of 0.0001" per 10". It is used to set up machine tools.
Attachment 216006
Examples of good levels can be found here at the Geiger & Bluhm web page:
https://www.geier-bluhm.com
Level# 3-0507, 7mm dia X 16mm long works for replacement levels for Sinar.
Attachment 216007
Circular levels often work better than two axis levels for setting up the camera for apron level. That said, better to use the GG grid lines to "square up" the image to be made as leveling alone is often a coarse set up only approximation due to the reality most buildings and such are seldom absolute level to the ground. This along with a long list of other factors renders levels on cameras with moderate usefulness.
What is a good thing to do, level the tripod or similar camera support or the image will shift in odd ways if the camera is panned to adjust the GG image.
Bernice
Re: Best dual axis bubble spirit?
That looks like a wonderful source, Bernice! I got hooked on Starrett selling it to machinists and mechanics starting when I was only 22 years old, back when all their business transactions were still hand written with paper and ink. I worked alongside an older fellow who had previously been a NASA optical machinist for satellite programs, who really knew his stuff. But I acquired my own levels much later when selling Starrett simply as a minor accessory line to cabinetmakers. If you want a square to check if other squares are really square on not (they seldom are), that's what you use. I've been using my Starrett squares and center punches this whole past two weeks on a project. And during that same era we were by far the largest Stabila dealer in the country, and I got free samples from them, and even better free samples from manufacturers now long gone. Mepro was another well-machined level brand, made in Israel. Most people nowadays don't even understand what a machined level is; everything is squirrely anodized extrusions with uneven paint layers.
One old trick I'd use in buildings was to bring along a marble or ball bearing and see which way it would roll on a smooth floor. All a level does on a camera standard - if even that is precisely set - is tell you just how rare truly square and plumb rooms and buildings are. That's what sneaky back swings and tilts are for! Now for picture hanging purposes, I have an adjustable story pole attached to a portable handtruck with a laser platform on it, for my self-leveling crosshair laser - again, a serious domestic brand and not a Chinese knockoff. But if a prominent linear moulding or ceiling line or window line is adjacent, and not itself level, then I have to offset the pictures themselves to match that, or they'll get blamed for not being level. For serious stuff I use linear cleats, not nails and picture wire.
Re: Best dual axis bubble spirit?
G&B is a good source for levels and such. There is SO much of these levels made in Asia today, it would not be surprising to discover they all are made in the same factory in Asia some where.
Starrett has been one of the industry standard measuring instrument suppliers for decades. Mostly good precision and really well made stuff that is reliable and last. They make a GOOD automatic or spring powered center punch that just ~works~ and works and works.
More of a Etalon (internal bore gauges), Mahr (specialty), Mitutoyo(most all are good and good values), Compact(dial indicators), Kafer(dial indicators) or EU centric measuring instrument fan.
:)
Bernice
Quote:
Originally Posted by
Drew Wiley
That looks like a wonderful source, Bernice! I got hooked on Starrett selling it to machinists and mechanics starting when I was only 22 years old, back when all their business transactions were still hand written with paper and ink. I worked alongside an older fellow who had previously been a NASA optical machinist for satellite programs, who really knew his stuff. But I acquired my own levels much later when selling Starrett simply as a minor accessory line to cabinetmakers. If you want a square to check if other squares are really square on not (they seldom are), that's what you use. I've been using my Starrett squares and center punches this whole past two weeks on a project. And during that same era we were by far the largest Stabila dealer in the country, and I got free samples from them, and even better free samples from manufacturers now long gone. Mepro was another well-machined level brand.