SKU: 24460379737

Blackmagic Design PL Mount Shim Kit

Sale price$585.81 Regular price$650.90
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Description

Blackmagic Design PL Mount Shim KitBlackmagic Design PL Mount Shim Kit The Blackmagic Design PL Mount Shim Kit is a critical technical accessory for cinematographers using the URSA, URSA Mini, URSA Mini Pro, or URSA Broadcast cameras. This kit is used to precisely calibrate the flange focal distance (the distance between the lens mount and the camera sensor), a process commonly referred to as "shimming" the mount. Purpose and Functionality In professional cinematography, focus marks on

Blackmagic Design PL Mount Shim Kit

The Blackmagic Design PL Mount Shim Kit is a critical technical accessory for cinematographers using the URSA, URSA Mini, URSA Mini Pro, or URSA Broadcast cameras. This kit is used to precisely calibrate the flange focal distance (the distance between the lens mount and the camera sensor), a process commonly referred to as "shimming" the mount.

Purpose and Functionality

In professional cinematography, focus marks on a lens must be accurate. If the distance between the lens and the sensor is off by even a fraction of a millimeter, the lens may not hit "infinity focus" correctly, or its focus scales may become unreliable.

  • Back Focus Calibration: Shims are used to adjust the camera's back focus to compensate for manufacturing tolerances in either the camera body or the specific PL-mount lenses being used.

  • Ensuring Lens Accuracy: By adding or removing shims, you ensure that a lens focused at 10 feet on the barrel is actually focused at exactly 10 feet on the sensor.

Kit Contents

The kit typically includes a selection of ultra-thin, color-coded rings that are placed behind the lens mount.

  • Set of 8 Shims: The kit contains multiple shims of varying thicknesses, allowing you to stack them to achieve a specific total thickness.

  • Baffle Tool: Some versions of the kit include a specialized tool to help remove the internal light baffle or the lens mount assembly without damaging the sensor's glass.

  • Color-Coding: Each shim is color-coded (often in shades like tan, red, or clear) to represent a specific thickness in millimeters, making it easier to track adjustments.

Compatibility

This kit is specifically designed for the interchangeable lens mount system found on Blackmagic’s high-end cinema cameras:

  • URSA Mini Pro (4.6K, G1, G2, 12K): Essential when swapping from the default EF mount to the optional PL mount.

  • URSA Broadcast G2: Critical for ensuring cinema PL glass performs correctly on the broadcast sensor.

  • Blackmagic Cinema Camera 6K (L-Mount): While the camera uses L-Mount, users who utilize the Blackmagic PL Mount adapter may require shims to ensure that adapted PL lenses maintain proper infinity focus.

How to Use the Kit

Shimming is a delicate process that should be performed in a clean, dust-free environment.

  1. Mount Removal: Use a 2.0mm hex key to remove the screws holding the existing lens mount onto the camera body.

  2. Placement: Place the desired shim (or combination of shims) onto the camera body, ensuring they sit flat against the mounting surface.

  3. Reassembly: Re-attach the PL mount and tighten the screws in a "star pattern" to ensure even pressure.

  4. Testing: Mount a wide-angle lens, set it to infinity, and check the image on a high-resolution monitor or using the camera’s focus peaking tool. If infinity focus is not achieved, the shim thickness must be adjusted.

Operational Insight

For rental houses and professional DPs, shimming is a standard part of "camera prep." Because temperature changes and physical wear can slightly shift a camera's flange distance over time, having a shim kit on hand is vital for maintaining professional standards. It is often recommended to use a Siemens Star chart or a Projector during this process to verify that the focus is sharp across the entire frame.

Shipping Notes
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Exchange/Return Notes
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SKU: 24460379737

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4.4 ★★★★★
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Matthew Anderson
Boise, US
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long. I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
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Reviewed in the United States on February 18, 2026
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Verified Purchase
terlynn4
Lake Worth, US
★★★★★ 5
Long lasting and safer alternative to sticks
Color: Dogwood & Calming, Size: Medium
These are great, very durable, and have lasted a very long time. Much safer for my dogs than the random sticks they find in the yard. They do get shorter with chewing eventually, but they don't break off in little chunks like I've seen with some nylon chews, and they don't splinter like wood. Medium size works well for both my 16 lb Cavalier and my 60 lb Pyrenees/Golden mix. They're both moderate-to-aggressive chewers, though size obviously affects how much damage they can do. I wish you could buy the hemp chew separately because that one is very much a favorite in my house, so after 2 years and 2 purchases, I have barely any left of the remaining hemp chew, but still 2 of the dogwood chews that neither dog is as interested in anymore. I'd love to buy a couple more of just the hemp one.
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Reviewed in the United States on April 30, 2026
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Shannon Brace
Cuba, US
★★★★★ 5
Your dog will thank you.
Color: Dogwood & Fresh Breath, Size: Large
My dogs loves to chew on these. They make a small mess but not as bad as other chews. They are food for keeping teeth clean.
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Reviewed in the United States on May 31, 2026
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Anna
Birmingham, US
★★★★★ 5
Nice chew toy
Color: Dogwood Mushroom, Size: Medium, Color: Dogwood Mushroom, Size: Medium
Super durable and puppy loves it. It was a bit hard for her at first but now at 5 months it’s one of her favorite things to gnaw on! It is heavy for the size but seems to be great quality and has given many hours of chew time with minimal wear.
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Reviewed in the United States on March 12, 2026
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Jennifer
Phoenix, US
★★★★★ 4
Long lasting
Color: Dogwood & Calming, Size: Medium
My dogs love these bones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026

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