What lenses are compatible with the EF 1.4x III and EF 2x III extenders? Article ID: ART181804. |. Date published: 03/28/2023. The RF 70-200 f2.8 or f4 is not compatible with the 1.4 or 2.0x extenders. Your current choices would be: RF 100-300mm f/2.8 L IS USM - TC's can be used with full focal length 100-300. RF100-400mm F5.6-8 IS USM - TC's can be used with full focal length 100-400. RF100-500mm F4.5-7.1 L IS USM - TC's can be used 300-500mm only. RF400mm F2.8 L IS USM. I'd suggest getting the 1.4II. The difference between the II and III is quite small as other's have pointed out and you'll be saving a fair amount of money especially if you pickup one a used one. The 2xIII works nicely on the 70-200II however focusing speed is reduced by 50% so be aware of that. p.1 #3 · p.1 #3 · Canon 1.4 Extenders-Version II Vs Version III-Thoughts? The 1.4x III helps reduce CA with older lenses like the 500/4 IS and 300/2.8 IS. In general it's a bit sharper corner to corner. The 100-400 II is a fine lens, so I'd not hinder it with a 1.4x II just to save a few dollars. SKU: 5959400. (334) $1,399.99. 1-18 of 30 items. 1. 2. advertisement. Shop for canon ef 1.4 x ii extender at Best Buy. Find low everyday prices and buy online for delivery or in-store pick-up. Save $232.89 in "Accessory Savings" when you buy this Canon Extender. This Value Bundle comes with a Canon Extender, ProOptic Cleaning Kit, LensPen Pro Lens Cleaner and a Corel Software Kit and Shipping is free! Extending a lenses focal length by a factor of 1.4x, Extender EF 1.4x III incorporates phenomenal optical performance with minimal Physical differences. Since the introduction of the 800mm f5.6, Canon changed their off-white color of their telephoto lenses. All the new MKII IS super-tele lenses from Canon feature this new coloring so the MKIII extenders have been updated to match both the color and also the very slightly smoother design aesthetic of these lenses. So the Canon 1.4x EF Extender would make a 200mm focal length more like 280mm. While there can be some image degradation, this does allow for a relatively cheap way to achieve the magnification found in longer focal lengths. An extender is also lighter and smaller than a lens, coming in at only 2.9″ x 1.1″, 7.8 oz. (72.8 x 27.2mm, 220g). tVD2.

canon extender ef 1.4 x ii lens compatibility