Free: Contests & Raffles.
I: CANON Teleconverters Canon Makes two T-cons. Extender EF 1.4x II This tele extender can be used with fixed focal length lenses 135mm and longer (except the 135mm f/2.8 Softfocus lens), and the EF 70-200 f/2.8L, 70-200 f/2.8L IS, 70-200 f/4.0L, and 100-400 f/4.5-5.6L IS zoom lenses. It multiplies its focal length 1.4x. Effective aperture is reduced by one f-stop; autofocus is possible on any EOS camera when combined with a lens having an f/4 or faster maximum aperture. Extender EF 2x II This tele extender can be used with fixed focal length lenses 135mm and longer (except the 135mm f/2.8 Softfocus lens), and the EF 70-200 f/2.8L, 70-200 f/2.8L IS, 70-200 f/4.0L, and 100-400 f/4.5-5.6L IS zoom lenses. The EF 2x II doubles the focal length of any lens it's mounted to, and reduces its effective aperture by two stops. With the EF 2x II, AF is possible with any EOS body if the lens has an f/2.8 or faster maximum aperture, and compatible Image Stabilization lenses maintain the IS feature when used with any current EOS camera.It is important to understand that the use of a teleconverter is subject to a number of conditions, including the following. * 1: The T-cons listed in these charts can not be used with all lenses. Only the lenses listed in the charts will physically "fit" Canon and SIGMA T-cons. If it's not listed. It won't "FIT". The reason they will not "fit" is because the front element of the Canon T-cons protrude forward into a recess found only on specific telephoto lenses, for a true matched optic that works only with these telephoto lenses. Other lenses do not have the space behind there rear elements to allow this protrusion to fit into. * 2: T-cons will decrease the effective aperture of any lens to which it is attached. * 3: In many cases, the increased f/stop will result in a loss of Autofocus. In some cases, the use of a T-con will result in use of only the center AF point for autofocus. * 4. Additionally, EF Extenders reduce lens drive speed. The EF 1.4x or 1.4x II reduces lens drive speed by approximately 50~67% depending on the lens in use. The EF 2x or 2x II reduces lens drive speed by up to approximately 75%. This speed reduction gives the AF system more time to detect focus. This can be helpful since the depth of focus is reduced with the longer effective focal length and the chance of defocus increases. However, the reduced tracking speed and smaller maximum apertures caused by the use of Extenders can be a disadvantage with fast moving subjects, particularly in low light. * 5. T-cons WILL degrade the final image quality of the lens in use. * (the degree to which this is perceptible varies depending on the lens with which it is used) * 6. T-cons DO effect Minimum Focus Distance. However, they do not alter the lens's optical working distance. The change in MFD, measured at the sesor/film plane is only due to the actual change in physical length of the total Optic in use as increased by the length of the T-Con itself.Requirements for Auto Focus * Canon makes SLRs with TWO distinct Aperture requirements for Autofocus. (AF) * A: The 1 series can AF with apertures as small as f/8 Models include; EOS 1D, 1Ds, 1DMkII, 1DMkIIN, 1Ds MkII, and film cameras EOS 1 and EOS 3 * B: All other EOS bodies require f/5.6 to AF Models include D30, D60, 10D, 300D, 350D, 20D, 30D, and 5D Film bodies = all of them except for the 1 and 3Calculating Focal length and ApertureThe math is simple. * Multiply the lenses focal Length in MM times the T-cons "X" (1.4X or 2X) to find the focal Length that will result.The same is true of f/stop. * Either Multiply the lenses Max Aperture times the T-cons "X",. or simply add one full stop when using the 1.4X or two full stops when using the 2X
CANON Extender EF 1.4x II and Extender EF 2x II Teleconverter compatibility Chart* In the charts "30D" represents all Canon "non 1 series" cameras film or digital re AF compatibility. This includes 300D, 350D, 400D, D30, D60, 10D, 20D, 30D and 5D etc."1D" is representative of all "1 series" film or digital as well as the EOS 3.NOTE: "AF" means the combination will autofocus."MF" (Manual focus only) means that the combination will function,. but AF will NOT be available. Canon EF LENS Compatibility: ------- 30D/5D/350D* --- 1Dseries* ----- LENS --------------------------------------- 1.4X -- 2X ------ 1.4X -- 2X CANON EF 135mm f2L USM ------------------- AF --- AF -------- AF --- AF CANON EF 180mm f3.5L Macro USM --------- AF --- MF ------- AF --- AF CANON EF 200mm f1.8L USM ----------------- AF --- AF ------- AF --- AF CANON EF 200mm f2L IS USM -----------------AF --- AF ------- AF --- AF CANON EF 200mm f2.8L USM ----------------- AF --- AF -------- AF --- AF CANON EF 300mm f2.8L IS USM -------------- AF --- AF -------- AF --- AF CANON EF 300mm f4L IS USM ---------------- AF --- MF-------- AF --- AF CANON EF 300mm f4L USM ------------------- AF --- MF -------- AF --- AF CANON EF 400mm f2.8L IS USM --------------- AF --- AF -------- AF --- AF CANON EF 400mm f4DO IS USM --------------- AF --- MF -------- AF --- AF CANON EF 400mm f5.6L USM ----------------- MF --- MF -------- AF --- MF CANON EF 500mm f4L IS USM ----------------- AF --- MF -------- AF --- AF CANON EF 500mm f4.5L USM ----------------- MF --- MF -------- AF --- MF CANON EF 600mm f4L IS USM ----------------- AF --- MF -------- AF --- AF CANON EF 800mm f5.6L IS USM -------------- MF --- MF-------- AF --- MF CANON EF 1200mm f5.6L USM ---------------- MF --- MF-------- AF --- MF CANON EF 70-200mm f2.8L USM-------------- AF --- AF -------- AF --- AF CANON EF 70-200mm f2.8L IS USM----------- AF --- AF -------- AF --- AF CANON EF 70-200mm f/4L USM--------------- AF --- MF -------- AF --- AF CANON EF 70-200mm f/4L IS ----------------- AF --- MF -------- AF --- AF CANON EF 100-400mm f4.5-5.6L USM-------- MF --- MF --------AF --- MF "Other" Compatible Lenses, Discontinued, or "Not recommended" TS-E 24MM F/3.5L Not recommended TS-E 45MM F/2.8 TS-E 90MM F/2.8 MP-E65mm f2.8 1-5X Macro Any EF-L Telephoto listed above, it's older brother (non IS etc.) will "fit" as well with the Exception of The 80-200mm f/2.8L T-Cons do not ift the 80-200mm!Canon T-CON With SIGMA Lens Compatibility (a work in progress)Below are the SIGMA lenses that we know FIRST HAND work with Canon TC'sPlease add your info and any proof you might have (photos of it assembled would be nice, but we will tend to trust you too ) EX lens Compatibility w/ Canon T-Con 30D/5D/350D* -- 1D series* - Compatible lenses - - -------------------------- 1.4X-- 2X ------ 1.4X -- 2X APO 300mm F2.8 EX HSM ------------------------AF --- AF ------- AF --- AF APO 500mm F4.5 EX HSM ----------------------- MF --- MF ------- MF* --- MF APO 120-300mm F2.8 EX IF HSM -------------- AF --- AF ------- AF --- AF APO 300-800mm F5.6 EX IF HSM -------------- MF --- MF ------- MF* --- MF CONFIRMED DOES NOT FIT Macro 180mm f/3.5 EX IF HSM --------- EF MKII Versions do not fit. APO 70-200mm f2.8 EX HSM ------------EF MkII Versions do not fit. MkI 1.4x Fits with full AFCANON EF LIFE SIZE CONVERTER I recently acquired the EF Life Size Converter. (Thanks to Martin AKA "Huckaback Photo", who informs us of it's flexibility) The EF Life Size Converter is an interesting little addition to any decent lens arsenal... Contrary to Canon's claim that it is a specific part for use only with the 50mm Macro,... it will fit ANY EF compatible lens. It's functionality is interesting.. it is essentially a combination of a T-con and an extension tube in one unit. I will need to do some measurebaiting (something I really never do) to determine what sort of additional magnification it offers.. but I suspect it is very close to a 1.4X T-con. But unlike the T-con it also adds the spacing of somewhere between a 12mm and 25mm extension tube reducing focus distance while increasing focal length with one part. It's front element is also slightly recessed,. so unlike Canon's dedicated Teleconverters.. the EF Life Size Converter does not protrude forward and will fit any lens. As with extension tubes, the EF Life Size Converter will reduce focus distance, allowing more magnification, at the expense of loosing infinity focus. How much closer you can get, like and extension tube, varies with your existing lenses normal minimum focus distance. Link to Samples Unlike the Canon EF T-Con's, this units presence is NOT indicated in EXIF data, neither focal length or aperture info is effected by it's use. this of course means your EXIF is out the window as both Focal length and aperture are obviously being altered. The EF Life Size Converter is About the same size as the 1.4X T-con.. it is slightly lighter in weight (has less glass than the T-con)... but it is slightly longer.. (due to the "extension tube" hollow part) I think it would make a great addition to any Macro enthusiasts bag of tricks.
