Available sizes of Astronomik filters

Astronomik filters come in a wide range of standard sizes, both mounted and unmounted, to suit various optical setups and cameras. You can find the available sizes for each specific filter on its product page. If you need a custom size, we also offer special sizes upon request (see below).

We offer all Astronomik filters in the following sizes from stock:

Mounted filters in threaded cells

• 1.25" cell (M28.5 x 0.6 thread)

• 2" cell (M48 x 0.75 thread)

• SC Rear Cell (2" SC-thread / 24TPI)

• T-Mount (T-thread, M42 x 0.75)

• Photographic lens filters: M49, M52, M55, M58, M62, M67, M72 and M77 - usually available within one week upon request

Filters with protective rings (for filter wheels, no screw thread) (glass thickness: 1mm, mechanical thickness: 3mm)

• 31mm diameter 

• 36mm diameter

• 50mm diameter

Unmounted filters (glass and mechanical thickness: 1mm)

• 27mm diameter

• 42mm diameter

• 50x50mm² (square)

Clip-Filters for DSLR and system cameras

• Canon EOS APS-C DSLR

• Canon EOS full-frame DSLR

• Canon EOS M 

• Canon EOS R

• Sony Alpha 7 and Alpha 9

• Nikon full-frame DSLR

• Nikon Z full-frame

• Pentax K-1

Custom made filters with special sizes

If your application requires filters in special sizes or shapes, we can produce custom filters for your equipment requirements upon request - whether you need a single filter or a larger batch.

Technical specifications

• Thickness: Standard thickness is 1.1mm. Custom thicknesses are only possible for larger quantities.

• Shapes: Circular filters are straightforward to produce, but we can also manufacture square, rectangular, hexagonal, or other complex shapes.

• Sizes:

          Minimum diameter: 20mm
          Maximum diameter: Varies by filter type (see below).

• Tolerance: The filters are cut to the requested diameter with a tolerance of +0.0mm / -0.2mm.

Custom transmission curves

• For large quantities, we can produce filters with custom transmission curves. To ensure attractive pricing, we recommend ordering around 50 filters with a 50mm diameter or an equivalent surface area of 0.2m².

Ordering 

• Custom sizes and special orders are not available through our dealers. Please contact us directly for a quote and to discuss your specific needs.

Maximal sizes