How do I adjust the length of the Baader VariLock 29?
To adjust the VariLock 29, you use the included hook wrench to slightly loosen the knurled locking ring. This allows the inner extension sleeve to be threaded in or out to the desired length, using the engraved millimeter scale as a guide. Once the correct length is set, you tighten the locking ring firmly with the hook wrench to secure it in place.
What is the difference between the T-2 and S52 adapters on the VariLock 29?
The VariLock 29 comes with two male-thread adapters to give you connection options:
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T-2 Adapter (pre-installed): Provides a standard T-2 (M42x0.75mm) male thread. Due to the T-2 standard's physical size, the clear internal diameter is limited to 38mm.
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S52 Ring-Dovetail Adapter: This adapter replaces the T-2 piece and connects directly to Baader's S52-compatible T-Rings. This removes the T-2 bottleneck and increases the clear internal diameter to 42mm, which is better for larger sensors.
I need to set a precise 26.5mm spacing for my reducer. Is the VariLock 29 suitable for this?
Yes, this is exactly what the VariLock 29 is designed for. You can use its stepless adjustment and millimeter scale to set the length to precisely 26.5mm. Once set, the locking ring ensures that this critical distance remains fixed throughout your imaging session without any chance of slipping.
Will the Baader VariLock 29 introduce flex with a heavy camera and filter wheel?
No. The VariLock 29 was engineered to be "absolutely torsion-resistant." Its robust locking ring mechanism is designed to create a solid, rigid connection that prevents the kind of flex, sag, or rotational play that can occur with lighter-duty adjustable adapters or helical focusers. It is an ideal choice for building a solid imaging train.
Why choose the VariLock 29 instead of a set of fixed T-2 extension rings?
While fixed rings are solid, they lack adjustability. The VariLock 29 allows for continuous, fine-tuned spacing between 20mm and 29mm. This lets you dial in the exact backfocus required by your corrector or reducer, rather than being limited to the discrete lengths of fixed rings.
What tools are included with the Baader VariLock 29?
The VariLock 29 includes the two essential tools for its operation: a hook wrench (clamping key) for tightening and loosening the main locking ring, and a small hexagonal wrench for swapping between the T-2 and S52 male-thread adapters.
