Filter sizes for Canon EF lenses

Canon filter sizes are difficult to track down, at least in list form. At one time, all manufacturers went to the trouble to do so with printed brochures but now, with the internet, not so much.

With the move to EOS R cameras and the highly capable and versatile EF-RF adaptors, the older EF lenses remain hugely popular. Indeed, with focusing accuracy as good if not better than the older DSLRs, especially when focused off-centre, EF lenses have seen a new lease of life.

Filters for lens protection seem to divide opinions, however, I’m strongly in favour of them. Not only do they prevent fumbling with lens caps (keep those for storage), but they’re also a lot easier to clean than the front element.

My filter of choice for Canon lenses is the Canon ‘Protect’ or Protector filter. These are high-quality, though, spec-wise, there’s very little information on them. Made in Japan using high-grade optical glass and aluminium frames, they are multicoated with Canon’s Super Spectra Coating (SSC), like the EF and RF lenses. After having used them for over a decade, I’ve never encountered any adverse effect on colour balance or image quality.

They’re also very reasonably priced, at least for the popular sizes.

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Canon UK Store

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While I use the Protect filters on most of my Canon lenses, other brands that I own and use less frequently but still highly recommend include:

B+W (XS-Pro/Master) – Clear or UV.  Schott glass, brass frames, and nano-coated, thinner, lighter weight than F-Pro/Basic. The only downside is the price.

Breakthrough Photography (X4/X2) UV only – Schott (X4)/AGC (X2) glass, brass frames and nano-coating. While the X4 can be pricey, the X2 is a great budget option.

Formatt Hitech (Firecrest) UV Protector or MCUV 370/400nm – Schott glass with super-lightweight aluminium frames (both with and without front threads, so be vigilant when ordering). Being lightweight and competitively priced, they are especially recommended when typically expensive large-size filters such as 95mm and 105mm are needed. High-quality and British-made.

The following is a work in progress, the columns will be filled out in due course.

Affiliate links:

Canon UK Store

Canon US Store

Amazon UK

Amazon US

As an Amazon Associate, I earn from qualifying purchases.