Canon Extender EF 1.4X II Teleconverter * Mint & Boxed

Complete with caps, instructions & box.

The converter is in mint cosmetic condition, please see photos provided.

Optically clean and clear.

Compatible Lenses

The 1.4× II Extender is designed for Canon’s L-series telephoto primes and zooms, plus select other L-class optics with recessed rear elements:

• Telephoto & Super-Telephoto Primes:

• EF 135 mm f/2 L

• EF 180 mm f/3.5 L Macro

• EF 200 mm f/1.8 L

• EF 200 mm f/2 L IS

• EF 200 mm f/2.8 L II

• EF 300 mm f/2.8 L (IS & non‑IS)

• EF 300 mm f/4 L (IS & non‑IS)

• EF 400 mm f/2.8 L (IS & II)

• EF 400 mm f/4 L DO IS

• EF 400 mm f/5.6 L

• EF 500 mm f/4 L IS (I & II)

• EF 600 mm f/4 L IS (I & II)

• EF 800 mm f/5.6 L IS

• Telephoto Zooms:

• EF 70‑200 mm f/2.8 L IS USM (all versions)

• EF 70‑200 mm f/4 L IS USM

• EF 100‑400 mm f/4.5‑5.6 L IS USM (Generations I & II)

• Tilt‑Shift Lenses (manual focus only, no autofocus):

• EF TS‑E 17 mm f/4 L

• EF TS‑E 24 mm f/3.5 L

• EF TS‑E 45 mm f/2.8

• EF TS‑E 90 mm f/2.8

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🔍 Why Compatibility Matters

• The extender’s front element protrudes, so only lenses with recessed rear optics are safe to pair. Using incompatible lenses risks damaging both the lens and extender  .

• Autofocus and image stabilization functionality vary depending on the lens.

• With the zooms listed above, you’ll retain IS and AF, though AF may drop to a single central point on DSLR bodies.

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📸 Autofocus & Aperture Impact

• Using the 1.4× extender reduces the maximum aperture by 1 stop (e.g., f/2.8 → f/4; f/4.5 → f/6.3)  .

• On many EOS DSLRs, if your effective aperture drops below f/5.6, autofocus may be lost—unless your camera supports AF at f/8 (like the EOS‑1D series, 5D Mark IV, 7D Mark II, and others)  .

• On modern EOS R-series mirrorless, autofocus generally works even at smaller apertures thanks to Dual Pixel CMOS AF ().

Any questions, please ask.

International buyers are welcome.

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