Multifunction Nodal / Macro Rail that would be Arca-Swiss® compatible.
Length about 17cm. (6,7")
Double dovetail structured profile.
Complemented by a 5 cm (1.97") Arca-Swiss® compatible Quick Release Clamp with short screw knob.
After an extensive search on the net, I found some parts that fulfilled all the prerequisites for building up exactly what I had in mind.
Kiwi Fotos LP-169 Lens Plate
|Top view of the Kiwi Fotos LP-169 lens plate showing clearly the anti-slide ridge on one side and one groove and 3 holes on the other side for the attachment of Accessories.|
|Bottom view showing the M3 stop screws, the captive slots and two extra M3 tapped holes which function for securing accessories.|
|Relocation of 1/4"-20 captive screw. Also shown is the M3 stop screw and the two extra M3 tapped holes.|
|If we intend to use both the M3 screws as stop screws, then we shall need 2 extra M3 screws...|
|...which will fit in the appropriate M3 tapped holes in order to secure the clamp on top and avoid twisting.|
Fotopro QAL-500 Arca-Swiss® Compatible 5cm Quick Realease Clamp
|Fotopro QAL-500 Arca-Swiss® Compatible 5 cm Quick Release clamp with 3/8-16 mounting tapped hole and short screw button with bubble level.|
Quick Release plate and a 10mm long thread converter from 1/4"-20 to 3/8"-16.
|Bottom view with two additional guide holes for M3 screws.|
|For better fastening on the rail and avoid twisting under load, I drilled 2 x M3 tapped holes.|
|Bottom view with two extra M3 screws|
|Inserting and screwing the thread converter bushing...|
|... until it is flash with the clamp top and secured in place.|
Hejnar Photo Index Bars
|Hejnar Photo Index Bars with soft tipped screws and Allen hex key. This proves a covenient solution for marking the exact nodal point for the lens in use for future reference.|
|The index bar should be attached before securing the clapmp, since the rail's ridge will not permit it afterwards.|
|Index bar attached on the top dovetail and secured by the soft tip screws.|
|Next, the Quick Release clamp should be tightened on the rail with one 1/4"-20 captive screw through the center hole.|
|And secured in place with two M3 screws in order to avoid twisting.|
|Final inspection confirming that the bushing has not loosened.|
|Ready ! Total weight 223 gr (7,86oz) Total cost approximately USD 65.00|
This Nodal Rail was based on different parts gathered from eBay with a fraction of the cost of products of similar quality and function.
Was tested in various set ups and proved rigid and stable.
In further posts, I shall show how it can be utilized in:
Creating a Single Row Panorama Head,
Creating a Multi Row Panorama Head,
Using a Multi Row Panorama Head,
Creating an Economy 5-Way Precision Head
and as a Macro Slide Rail.
I hope you found the article helpful, thank you for viewing.
All Photos: © 2010 S.C.Vlachos
Kiwiifotos LP-169 Lens Plate Review
Fotopro QAL-500 5cm Quick Release Clamp Review
Hejnar Photo Index Bars Reference