Canon EF85mm f/1.2L II USM; Laowa 100mm f/2.8 Marco CA-Dreamer 2x; Canon EF-Extender (Teleconverter) read our M43 Speed Booster Compatibility Chart. Use the compatibility chart below to find your answer. If you are still undecided, get in touch via Livechat and we can guide you towards the right product. MF Only Can only be used for manual focus. F/8 Only Lens will only operate at F/8 or above. Rf lens and Rf extender compatibility in EF & RF Lenses 10-05-2023; Canon EF Extender compatibility in EF & RF Lenses 05-16-2023; EF 2X III Extender Compatibility with EF 70-200 2.8 L IS III USM in EF & RF Lenses 04-26-2023 Professional level. Optimised lens coatings, white heat shield coating. £ 579.99. Eligible for free delivery. Add to basket. Add to wishlist. ¹ Extender RF 2X is compatible with RF 100-500mm F4.5-7.1L IS USM (300 to 500 mm focal lengths only), RF 600mm F11 IS STM and RF 800mm F11 IS STM. ² When Extender RF 2X is used, the zoom range of the Enjoy more zoom on your existing lenses by choosing a Canon extender lens to add to your kit. RF Extender 2x Bring macro to life-size with this compact EF The RF Extender -> to EF lens is do-able with a hack. It will also work with lenses that are not normally compatible with a extender. The EXIF gets a little messed up, but lists the RF Extender so it's not unworkable. Not ideal, but it's just a hack. And the RF extender is a lot sharper than the EF II, at least to my eye. If Canon could have delivered the same performance in terms of optics, size and weight while increasing the compatibility of the TCs, they would have done so, I believe. So, while we don't know the exact compromise we avoided, I think we got what Canon thinks the majority of the market wants most: Less size and weight with options for greater .

canon extender ef 2x ii compatibility chart