What is the cheapest used Centon 500mm f/8 Mirror Lens in the UK?

The cheapest used Centon 500mm f/8 Mirror Lens currently listed is £19.99 at London Camera Exchange, based on 9 listings compared across 4 UK retailers.

How many used Centon 500mm f/8 Mirror Lens are for sale in the UK?

There are currently 9 used Centon 500mm f/8 Mirror Lens listings available across 4 UK retailers on UsedLens, updated daily.

What sensor format does the Centon 500mm f/8 Mirror Lens use?

The Centon 500mm f/8 Mirror Lens features a Full Frame sensor.

Used Centon 500mm f/8 Mirror Lens for Sale — From £20

£19.99 Low price

£89.00 High price

9 Listings

4 Retailers

2 New this week

2 Reduced

Great for: wildlife astro

Centon's budget mirror lens — the 500mm f/8 reflex for T2-adapted extreme telephoto on a budget.

The Centon 500mm f/8 Mirror Lens is a catadioptric (mirror) telephoto lens attached via a T2-to-Nikon adapter, a standardised 42mm thread mount that allows mirror and independent lenses to be fitted to various camera bodies with appropriate T-mount rings. Centon was a budget British camera accessories brand.

The lens uses a catadioptric (mirror) optical design — light reflects off two mirrors within the barrel, folding the optical path to achieve 500mm focal length in a compact barrel. The fixed f/8 aperture is inherent to the catadioptric design; no aperture ring is provided. The T2 mount couples it to Nikon F via an adapter.

Mirror lenses are distinctive for their donut-shaped out-of-focus highlights — a characteristic visual signature caused by the central obscuration of the rear mirror. They are substantially more compact than conventional 500mm lenses at f/8. The fixed f/8 aperture requires bright conditions or high ISO, and autofocus is not available. Budget brands like Centon typically show lower optical quality than major manufacturers.

Test at f/8 for sharpness and note that mirror lenses cannot be stopped down — f/8 is the only available aperture. Check the T2-to-Nikon adapter for secure coupling. Inspect the front and rear mirrors for dust, fungal spotting, or coating damage. Verify infinity focus accuracy. The donut bokeh is characteristic and not a defect.