May 28, 2018

Manfrotto MVH502 Video Head Arca Compatible Conversion Set from Hejnar PHOTO

Hejnar MVH502F63 conversion set on Manfrotto MVH502AH Head overview

As history shows Hejnar PHOTO brand of Arca style plates and clamps has become synonymous with quality parts, regarding the conversion of Manfrotto® tripod heads into the versatile Arca-Swiss® style.
This time, it was the turn of the MVAH502 A/AH Pro Video head to get its Arca-Swiss® compatible conversion set.

Unlike most Manfrotto models we saw converted in the past by Hejnar Photo the MVH502 has a large platform on top, equipped with the proprietary RC5 Quick Release system, which utilizes the 501PL plates. Nonetheless, 501PL plates are common to video heads but non Arca compatible as many DSLR videographers want.

The Hejnar MVH502F63 set contains a custom adapter plate to replace the whole structure of the top platform with the RC5 connector, plus the larger 3.25" long Hejnar PHOTO F63b Arca-Swiss® compatible Quick Release clamp.

The Conversion Set

The set contains all necessary parts, screws and tools for the conversion. But basically the custom adapter platform and the Hejnar F63 Quick Release clamp as mentioned above.

Hejnar Photo MVH502F63 conversion set components

Conversion Set Contents:
  • One adapter plate platform.
  • One Quick Relese clamp ( Model F63)
  • One 1/4"-20 x 3/4" flat head screw.
  • Two 10-32 x 5/8" flat head screws
  • Allen Hex keys for all provided screws

The Conversion Plate

Manufacturer Specification:
Model:MVH502
Length:4.9" (124.46 mm)
Width:3.9" (  99.06 mm)
Thickness:0.93" (23.62 mm)
Weight:13.3 oz (379 gr)
Tapped holes:One 1/4"-20 and Four 10-32 in 90° increments
Material:Precision C.N.C. machined 6061-T6 Aluminium
Color:Black hard coat anodized
Made in :USA

The conversion platform is built on two levels. The lower level fits into the socket of the RC5 quick connect platform and the top a little elevated plate accepts the F63 QR clamp.
There are four socket holes one at each corner of the lower and larger platform, to accept the hex cap mounting screws of the original platform.

Hejnar Photo MVH502 conversion platform/plate top view

Further, on the narrower top plate there is one tapped 1/4"-20 center hole, that corresponds to the center hole of the clamp. There are also four 10-32 tapped holes placed around the central 1/4-20 hole at 45 mm apart and in 90 degree increments.
These smaller holes correspond to the side holes of the F63 QR clamp enabling its alignment and possible reorientation by 90° on the head.

Hejnar Photo MVH502 conversion platform/plate bottom view

The bottom of the platform has the appropriate cuts and recesses in order to match with the head structure after the original platform is removed.

The F63b Quick Release Clamp

Manufacturer Specification:
Model:F63
Jaw Length:3.25" (82 mm)
Weight:135 gr (4.7 oz)
Countersunk/threaded holes:Three (1 x 3/8"-16 center hole and
2 x 1/4"-20 outside 45 mm apart)
Safety Stop Relief Grooves:Two
Long Captive Screw Knob:Stops at maximum opening
Material:Precision C.N.C. machined 6061-T6 Aluminium
Color:Black hard coat anodized
Hardware:Stainless Steel
Made in :USA

Following the norm of all Hejnar QR clamps, the F63 is compatible with Kirk®, R.R.S.®, Arca-Swiss®, and many other Arca style Quick Release plates and rails.
Been kept as an add-on unit, it can play different roles being used independently, i.e. mounted on another ball head and/or other equipment at will.

More about the Hejnar F63 QR Clamp in the Updated Hejnar PHOTO Quick Release Clamps Preview article



The Conversion Process
Is simpler and more straightforward than many earlier conversions on Manfrotto heads. Anyone with a little experience handling Allen hex keys and Spanners can do it in a few minutes.
It goes without saying, that all conversions with Hejnar parts are completely reversible, with no modification or damage induced to the original parts which may be kept in a safe place for future reassembly if ever needed.

Conversion steps:
  1. Remove four hex cap screws located at each corner of the original Manfrotto® mounting platform  using the provided Allen hex wrench.
  2. Attach MNH502 conversion plate to video head top using the same original hex cup screws.
  3. Mount the Hejnar F63 Arca style Quick Release Clamp.

That's all, four screws off, then just align and position in the correct front / back orientation the new platform, four screws back and you're done with the top platform.

Hejnar MVH502 conversion platform on Manfrotto MVH502AH Head side

Hejnar MVH502 conversion platform on Manfrotto MVH502AH Head front

Next, the F63 QR Clamp is attached on top of the adapter plate, by at least two side screws which align the clamp or all three of the provided screws including one in the center hole.
It's up to the end user to decide on the orientation of the F63b QR Clamp and the position of its screw knob, depending on the task in hand, since it can be screwed in any of four possible position, incremented by 90°.

Hejnar MVH502F63 conversion set on Manfrotto MVH502AH Head left top
The Hejnar Photo F63 QR clamp mounted by 3 screws on top of the Manfrotto® MVH502AH video head. The clamp screw knob can points to any side the user desires allowing for adjustment of a lens or camera plate either fore-aft or laterally within its limits.

Furthermore, according to Hejnar Photo website the choice of QR Clamp screw knob color (black or silver) and size (short or long) is up to the user who should leave a note with preference upon concluding the checkout in the Hejnar Online Store.

I hope you found the article useful, thank you for viewing.
All Photos used by permission: © 2018 Chris Hejnar / Hejnar PHOTO

Price and Availability:
Current price for the MVH502AH + F63 Set is US$ 112.00 (+Shipping where applicable) The set is available from the Hejnar Photo online Store as usual, but also from Amazon.com or eBay.

If you are interested in the product, do check the Recommended Sellers page for a valid Hejnar Photo discount coupon before ordering which is applicable only in the Hejnar Photo Online Store.

Referenced Articles:
Updated Hejnar PHOTO Quick Release Clamps Preview

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