AD-58 DSLR Adapter

Name: AD-58 DSLR Adapter
Brand: Field Tested Systems
SKU: AD-58
Price: 28.8 USD
Availability: InStock
Rating: 4.6 (5 reviews)

$28.8 ~~$45~~ In stock

Category: Astrophotography Accessories

Mount any 1.25″ filter cell (including Star Analyser or Rainbow Optics gratings) to DSLR filter threads. This filter fits Canon 58 mm lens cap threads. If your camera's lens cap threads aren't 58 mm, you'll need to add step-up or step-down rings.

If your camera's filter threads are not 58 mm, you will need some step up or step down Adapter Rings (link).

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Customer Reviews (4.6 / 5 · 5 reviews)

Richard E. ★★★★★ Oct 21, 2026

Using this to mount a Star Analyser grating on my Canon DSLR was dead simple – the 58mm threads matched perfectly. Now I can finally capture spectra without any extra rigging. Excellent fit and finish for the price.

Eva ★★★★★ Oct 19, 2026

The threads on this adapter are machined perfectly, no wobble when screwing onto my Canon 58mm lens cap threads. I paired it with my Star Analyser grating and the fit was snug but not too tight.

Avery ★★★★★ Oct 18, 2026

I was worried about compatibility with my Canon, but the 58mm threads lined up perfectly and hold my Star Analyser grating securely. The build feels solid enough for regular use, and it’s made capturing spectra much easier.