Technical Specifications: Model Name TC-X20, Magnification 2.0x, Optical Construction 9 elements in 5 groups, Maximum Diameter for Canon Ø69.8mm, Entire Length 66.8mm, Weight for Canon 7.2 oz., Accessories mount cap, rear cap, lens case. I don't have a huge budget so I can't afford 100-500mm lense or the new 200-800mm lense. So I'm hesitating between the 600MM F11 (400$ used) and/or 800MM F11 (625$ used) VS. Using a Canon RF 2x Extender on my RF 100-400mm F5.6-8 IS (550$ used). Your advices would be really appreciated and thanks in advance for your generosity. VILTROX Auto Focus 2X Teleconverter Extender Converter for Canon EF Mount Super Telephoto Lens 135mm f/2L,200mm,300mm,400mm,600mm,70-200mm,100-400mm and DSLR Camera 5DII 80D 760D 7D,Black. 79. $11500. FREE delivery Mon, Jan 8. Or fastest delivery Fri, Jan 5. In 2020 Canon also announced Extenders for the R system – the Extender RF 1.4x and Extender RF 2x. These high performance Extenders multiply the effective focal length of the lens to which they are attached by 1.4x or 2x. So, for example, a 400mm lens becomes 560mm with a 1.4x Extender, and 800mm with a 2x Extender. The Canon teleconverter (TC) has a lens element that extends out from the barrel and so prevents your current lens from mating to it. What that means is that you need a TC that doesn't extend like that. There are a few, but given that you have a Tamron lens, you might consider the Tamron 2x TC as an option. I couldn't find any documentation Altura Photo 58MM Tulip Flower Lens Hood for Canon EOS 77D 80D 90D Rebel T8i T7 T7i T6i T6s T6 SL2 SL3 DSLR Cameras with Canon EF-S 18-55mm f/3.5-5.6 is Lens and Select Nikon Lenses $11.99 $ 11 . 99 Get it as soon as Monday, Jan 8 The extenders have a front projection that goes into the rear of the lens. Most lenses have the rear element very close to the mount. One exception to to the compatibility list is the 70-300L zoom. As long as the lens is kept at 300mm the extender will fit. If the lens is zoomed shorter the lens can bump into the extender. From Canon's product page for the RF 1.4X extender: Note: This extender is only compatible with the following RF lenses RF100-400mm F5.6-8 IS USM, RF100-500mm F4.5-7.1 L IS USM, RF400mm F2.8 L IS USM, RF600mm F4 L IS USM, RF600mm F11 IS STM, RF800 F5.6 L IS USM, RF800mm F11 IS STM, RF1200mm F8 L IS USM. Please see the lens and/or camera body 2X Extenders. Go to solution. ferrarofilms. Apprentice. Options. 06-29-2016 06:29 PM. I do mainly Video and timelapse, my main lens for wildlife is Canon 70-300 L, on a 70D in video mode it can give me up to near 1500mm for close ups (fire and retain breath please). Sometimes if the subject allows me, after doing my video footage, I shoot nCakD.

canon extender ef 2x compatible lenses