Shop by Product Type: Choose Your Filter Format

Pick a product type and go straight to the right category.

Choose format first. Most customers pick between a finished, ready-to-use filter (slip-on or paired) versus a DIY material format (film sheets). For fit, use the Sizing & Fit Guide.

Product Types

Finished Slip-On Filters (Telescopes)

Ready-to-use, front-mounted filters sized by outer diameter (OD).

For telescope optical tubes and similar front-barrel devices where a slip-on fit is preferred.

Shop Telescope Filters Sizing & Fit

Finished Slip-On Filters (Camera Lenses)

Front-mounted filters for solar photography sized by OD (not Ø thread size).

For photographing the Sun in white light using slip-on mounting where applicable.

Shop Camera Lens Filters Photography Basics

Binocular Filter Pairs

Matched pairs — one filter per barrel (both barrels must match OD).

For binocular viewing in white light. Both barrels must be filtered before aiming at the Sun.

Shop Binocular Pairs Safety & Proper Use

DIY Thin Film Sheets

ND5 film sheets for custom front-mounted filter cells and projects.

For DIY builds, classroom projects, and custom apertures where you want maximum flexibility.

Shop Film Sheets Safety & Proper Use

Need Help Choosing?

Fit is the decision point. Finished slip-on filters are selected by the outer diameter (OD) at the front of the device. If you’re unsure where to measure, start with the sizing guide.

Measure correctly using the Sizing & Fit Guide.
Compare handling and image tone in Materials & Optics.
For technique, see Solar Photography Basics.
If you want help before ordering, contact Support.

Safety Reminder

Always attach the filter before aiming at the Sun. Inspect before every use and discontinue use immediately if the filter is damaged.

Full procedure: Solar Filter Safety & Proper Use