November 26, 2018

Innovative Hejnar PHOTO CQD1 Quick Release Plate with Quick Detach Socket

Hejnar CQD1-400 4" plate top side

Quite sometime after the introduction of the Innovative Hejnar Photo FQD1 Mini Quick Detach QR Clamp last June, it was about time for Chris Hejnar to combine the two worlds of Quick Release and Quick Detach on a rail.

As I mentioned in the FQD1 preview, neither of these worlds is new, but the combination is indeed. Somehow, further versatility is added to products tested for rigidity and durability for many years, without compromise.

The CQD1 Plate

Manufacturer Specification:
Length:4" (101.6 mm)
Width:1.5" (38.1 mm)
Height/Thickness Plate:3/8" (0.95 mm)
Height/Thickness Ridge:1/8" (0.32 mm)
Weight:71 gr (2.6 oz)
QD socket:Stainless Steel Quick Detach Socket 
Safety Stops:2 x M3 cap-head screws
Long Captive Slot:with 1/4"-20 captive screw* 
Material:6061-T6 Aluminium
Color:Black hard coat anodized
Hardware:Stainless Steel
Made in :USA

* The 1/4"-20 captive style screw will be about 0.3 inches (0.76 mm) above plate surface. If you are planning on using it with a blind hole, please check the depth of it first. As you may need a shorter screw.

The innovative Hejnar CQD1 is based on the good old 4" (101.6 mm) Hejnar Photo C1-400 Quick Release Lens Plate with Ridge. Although the double dovetail is standard, nonetheless, the full length captive slot is slightly shorter in order to accommodate the QD socket, as the extra 1/4"-20 tapped hole present on the C1-400 is also missing .

The bottom side is also different from the original, in favor of the QD socket but the two M3 safety stop screws are still there.

Hejnar CQD1-400 4" plate bottom side

The QD socket used is embedded near the rear of the plate and is made of steel with ferritic nitrocarburizing treatment, making it extra durable and its surface wear-resistant.

Hejnar CQD1-400 4" plate bottom side QD detail


Its obvious that the QD socket on the CQD1 is meant to attach a standard push-button QD mount. That mount, may well be on a QD Sling Swivel which combined with the CQD1 rail would enable a sling strap to be attached on your lens.

The QD system has been used for many years by industries around the world including NASA, law enforcement and military agencies. The design inhibits accidental removal, especially when something is hanging from the strap.
Therefore, you may attach the Arca Style rail on your expensive telephoto lens on its Collar foot and then attach your favorite strap to the plate for carrying but also securing it on you.

Hejnar CQD1-400 4" plate with sling strap

As usual with all Hejnar QR plates the CQD1 is accompanied by all necessary screws and tools, which in this case are one SS 1/4"-20 captive mounting screw, two SS M3 safety cap screws and two size Allen Hex keys, one for the 1/4"-20 mounting screw and one thinner for the M3 safety stop screws.

Hejnar CQD1-400 4" plate with hex keys

Arca Swiss® compatibility is a standard for Hejnar Photo products extended to this QR clamp as well regarding its clamping jaws. Hjenar Photo products work with Arca type clamps and plates from:
  • Markins® including lever release clamp
  • Really Right Stuff®, including lever release clamp.
  • Arca Swiss®
  • Wimberley®
  • Kirk®
  • Photo Clam®
  • Foba® (Foba uses different safety stop mechanism, so safety stops may need removing)
  • Vanguard ABH Series Ball Heads (ABH is Vangaurds only Arca-Compatible series)
  • Custom Brackets®
  • Jobu Design®
  • Acratech®

I hope you found the information useful, thank you for viewing.
All Photos by courtesy of Hejnar Photo © 2018 Chris Hejnar

Price & Availability:
Current price for the CQD1 QD 4" Rail is US$ 45.00 (+Shipping where applicable) and is available now from the Hejnar Photo online Store.

If you are interested in the product, do check the Recommended Sellers page for the current valid Hejnar Photo discount coupon before placing your order in the Hejnar online store.

Sling Straps with QD mount like the top grade Magpul® mentioned above or equally strong but cheaper are available for purchase from Amazon, eBay and other stores with sporting fishing and military equipment.

Referenced Articles:

Innovative Hejnar Photo FQD1 Mini Quick Detach QR Clamp Preview
Innovative Hejnar Photo FQD1 Mini Quick Detach QR Clamp Preview

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