Although my initial intention was to test this rail as a base for my new very Heavy Duty Panorama Head, the extra features of the G20-10 brought up some more nice ideas.
The G20 series Rail
|Length:||254 mm (10")|
|Width:||1.50" (254 mm)|
|Weight:||187 gr (6.6 oz)|
|Metric Scales:||On both sides|
|Tapped Holes:||2 X 1/4"-20 both in front and back|
|Mounting Slots:||3 X Captive Stylee|
|Mounting Holes:||2 X Threaded, one 1/4"-20 and one 3/8"-16|
|Safety Stop Screws:||2 X M3 one on each side|
|Material:||CNC machined 6061-T6 Aluminium|
|Color:||Black hard coat anodized|
|Made in :||USA|
|On the bottom side, the G20-10 rail has two cross bars which add anti-torsional strength to it and comes fitted with two M3 stop screws, one at each end, protecting from accidental drop off, from a non fully closed clamp.|
Used as a long LLSB
As I mentioned in the beginning the original purpose for using this clamp has to do with my tests of heavy duty panorama head where thinner rails had a twisting distortion problem under loads of toque.
Anyhow, this is a very versatile multi purpose rail that can have more than one uses.
Due to its length and sturdiness it is perfectly suited for a Long Lens Support Bracket for long telephoto lenses that lack a collared foot.
|In this case an extra small clamp is needed, like Hejnar PHOTO F60 1" QR clamp with its flat head 1/4"-20 screw. The dowel pin and hex keys are supplied with the rail anyway.|
|Using the dowel pin and the flat 1/4"-20 screw the F60 QR clamp is aligned and secured in the rails's front hole.|
|Next step is to assemble a pair of quick release clamps back to back and perpendicular to each other, as described in my Hejnar Photo F012 1,5" (3,8cm) Quick Release Clamp review. For this purpose I used Hejnar PHOTO F61b and F012 1,5" QR clamps and an extra 3/8"-16 to 1/4"-20 thread conversion bushing.|
|An alternative solution is to use a subtend clamp at the back, like the Hejnar PHOTO F51 Dual Subtend QR clamp.|
This is perfect for really long telephoto lenses equipped with a collar foot and an Arca Swiss® compatible lens plate.
Used as a heavy duty LLSB with height regulation
The existence of tapped holes both at the front and the back of the rail, permits for even more complex solutions, that would accommodate, stabilize but also regulate the height of a camera base mount on a very long lens.
|Apart from the QR clamp attached in the front hole, we need another small clamp to be attached in the back hole. It may be identical to the front one, but here I use the Hejnar PHOTO F61b 1,5" QR clamp for demonstration purposes.|
|The rail part is ready with one QR clamp at both ends.|
|In addition we need another small QR clamp (here I use an older Hejnar PHOTO F012 1,5" clamp), a short rail with 1/4"-20 tapped hole and dowel pin holes like the Hejnar PHOTO G15-60 6" Multi Purpose Rail and a Lens Support Bracket like Hejnar PHOTO LSB-R2.|
Used as horizontal base rail for a panorama head
A "sneaky" preview shot from my heavy duty panorama head tests. More details in the upcoming Create a Heavy Duty Multi Row Panorama Head article.
|Hejnar PHOTO G20-10 rail used as a horizontal base rail, proved sturdy enough to heavy loads (more than pictured above) without any torsion or vibration.|
Canon EOS 50D+BG-E2N +EF-s 17-85 IS USM with Hejnar PHOTO G16-60+F61b as nodal, Benro PC-1 Panorama Clamp as vertical rotator, Hejnar PHOTO F51 Dual Subtend QR Clamp as vertical height regulator, G15-80+G103+F68 as vertical rail. Sunwayfoto DDP-64MX+DDY-64 Panoramic Indexing Rotator as horizontal rotator on Sunwayfoto XB-44 ball head, supported by Benro A-298 EX Versatile Tranforner Tripod.
Very nice design and machining.
Very good finishing and anodizing.
Excellent versatility for limitless uses.
Excellent strength and torsional behavior.
Very good value for money.
Small issue with prototype rail front hole, that will be resolved in production units.
A very strong and sturdy rail, with attributes that make it a real multipurpose rail. There is a lot more of implementations to be coming based on this MPR rail in future articles.
I hope you found the article and ideas useful, thank you for viewing.
All Photos © 2012 S.C.Vlachos
Note: The G20-10 rail presented in this article is a prototype / first-production unit, kindly offered for evaluation and review by Chris Hejnar of Hejnar PHOTO. Therefore, there may be some small visual or functional differences from the final production units. For final products you may visit the "Multipurpose Rails - 5/8 Thick Rails" section in the Hejnar PHOTO online store.
Price and Availability:
Current price for the G20-10 rail is US$ 75.00 (+Shipping where applicable) and is available from Hejnar Photo online Store
If you are interested in the product, do check the Recommended Sellers page for a valid Hejnar Photo discount coupon before ordering.
Hejnar PHOTO G15-80, G16-80 and G15-60 Multi Purpose Rails
Hejnar PHOTO F60 1" Quick Release clamp
Hejnar Photo F012 1,5" (3,8cm) Quick Release Clamp
Hejnar PHOTO F51 Dual Subtend QR Clamp Review
Benro A-298 EX Versatile Tranforner Tripod Review
Benro PC-1 Panorama Clamp Review
Sunwayfoto DDP-64MX+DDY-64 Panoramic Indexing Rotator Review
Ideas for a Long Lens Support Bracket (Part 1). (Part 2), (Part 3), (Part 4)
Create a Heavy Duty Multi Row Panorama Head