wwp@yahoogroups.com:
Re: Lens and Body database? Hardware
Douglas L. Urner 2005-May-18 02:56:00
I'd suggest that it might be a bit more useful if we measured from
the lens mount to the entrance pupil. The reason for this is that
that dimension might be a bit more accessible for cameras that are
mounted. For example I've got my D70 on a RRS L bracket and can't
easily measure to the tripod hole.
But if we have measurements from the lens mount that should be pretty
easy -- maybe even easier than measuring to the tripod hole. And of
course the tripod hole and the film (sensor) plane are all in fixed
positions relative to the lens mount for a given camera. Another
advantage to using the lens mount is that the data will easily
translate to other cameras in the same mount family.
Of course it would be great to also include some body measurements in
the table. For example:
- lens mount to film plane
- tripod hole to lens mount
- camera base to center of lens mount
- common brackets to center of lens mount (from both sides for L
brackets)
I've got to figure out what the "real values" of my measurements are,
but I'd be happy to share them -- right now I just measure between
easy to fix points on my gear.
Doug
--
Douglas L. Urner <#removed#> Port Orchard, WA +1 360 769 5565
On May 17, 2005, at 9:44 :44, jefffreymartin wrote:
> Does anyone want to make a database of camera combos and relative
> dimensions for building home made pano heads?
>
> On the hardware side, we are all trying to keep our cameras in the
> same spot! We must either make or buy a pano head to really get the
> job done.
>
> Since a perfectly functional pano head can be made for less than 20
> dollars, I think most handy people would prefer to do just that.
>
> To be able to do this easily, the Really Important Thing to know is
> (1) distance from bottom of camera to center of lens opening
> (2) distance from screw hole (for tripod) in camera to "exit pupil" of
> lens
>
> Once this information is more accessible, the less reason anyone will
> have to spend 500 dollars on some safe solution, and rather to solve
> the problem cheaply and easily.
>
> Eos 300d for example, I have 40mm for bottom of camera body to center
> of lens opening,
> Peleng 8-mm, I have 84mm for exit pupil to camera tripod hole.
>
> If anyone is interested in sharing this information for the use of
> everyone who searches for it, I would be willing to put it on a web
> page, for example panotools wiki...
>
> best,
> Jeffrey
>
>
>
>
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