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DSLR Camera Deals

Need some extra Distance? – Canon EF 1.4x II Extender

The Canon EF 1.4x II Extender – seems like a great idea. Who wouldn’t want to get just a bit closer to your subject without having to step closer. A couple things I noticed when taking a look –

  • With this extender attached, the f/ stop decreases by 1 stop.
  • Auto focusing is possible combined with a lens that has an f/4 or faster aperture.

Amazon has it listed for $304.95 + 9.50 shipping.

Official Product Description:

Canon is an industry leader in professional and consumer imaging equipment and information systems. Canon’s extensive product line enables businesses and consumers worldwide to capture, store and distribute visual information. Cannon provides a wide range of accessories that are fully tested and 100% compliant with the corresponding equipment. All accessories are noted for their high reliability and superior quality.The Company offers its new EF 1.4x II extender that is designed for use with all Canon EOS System cameras and most high-end EF telephoto and super-telephoto lenses including all fixed-focal length L-series lenses from 135mm to 1200mm as well as several L-series EF telephoto zoom lenses. Its new internal anti-reflection construction improves contrast even when shooting in heavy backlit conditions. The EF 1.4x II extender will give photographers the additional telephoto capabilities they need without sacrificing image quality. In addition, the compact design of the extender will allow photographers to travel with a lighter, more compact gadget bag.

Technical Details:

  • 1.4x telephoto extender for multiplying focal length of Canon 135mm or longer lenses
  • Fits all 135mm or longer fixed focal length lenses and some 70-200mm telephoto lenses
  • Preserves autofocus on any EOS camera when combined with f/4 or faster lens
  • Weather-resistant construction and improved anti-reflective surfaces in the barrel
  • Measures 2.9 inches in diameter and 1.1 inches long; weighs 7.8 ounces

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Discussion

5 Responses to “Need some extra Distance? – Canon EF 1.4x II Extender”

  1. Depending on your body some technically should be able to autofocus with a 5.6 lens.

    When I stack the 1.4x with the 2x on a f/2.8 I think that puts me around f/8.

    Posted by cyberjim | March 30, 2010, 3:33 pm
  2. It’s true that some camera’s will focus with a f5.6 lens. 1.4×5.6 equals 7.84 and is still less than 8… a lot of camera’s need just a little bit more lens-opening to ‘see’ enough to be able to focus (don’t ask me why, I’ve also been told by a specialist and reality/experience proved him right). it’s all very technical but the main issue is that you have to have enough light (to detect contrast) for the camera to focus automatically. if you focus manually you can do almost anything 😉

    a 2x extender is only to be used with light-strong lenses (like 3.5 or better) because the multiplication soon exceeds the magical value of 8. for example with a zoomlens that varies from f3.5 to f5.6 (depending of the zoom you use) you get in trouble when using the maximum focal length. and that’s where you want to use the extender the most (no reason to use the extender at minimal focal length because you can do the same by just zooming without the extender…)

    by the way… most lenses perform best (sharpness and contrast in the visible area) at f8 or f11. so with a 1.4 extender that’s 11 or 16 and with a 2x extender it’s 16 or 22… mind that focussing is always done at the largest aperture possible of the lens. focussing and actually taking the picture are 2 seperate things for the camera. so you can put the aperture to 16 or so for taking the picture and still focus on auto (if the largest aperture x extender remains at or below 8…)

    Posted by Marcel Otten | March 30, 2010, 5:32 pm
  3. o.k. this one is off the subject, but you said: “you have to have enough light (to detect contrast) for the camera to focus automatically”
    So that must be why it is better to use manual when shooting a band or something that would be for for the most part a dark scene, interesting!

    Thanks for sharing such a great review of the F/stop versus extenders. I don’t know how many think about the sweet spot changing when you add an extender or two.. wait I shouldn’t group myself with everyone… I didn’t think about that:)

    Posted by admin | March 31, 2010, 4:07 am
  4. …’use manual when shooting a band or something that would be for the most part a dark scene’…

    if nothing in particular ‘lights up’ then the camera cannot detect ridges or lines with high contrast. when areas are detected that are close enough and are different enough, then the lens is operated until these differences are maximized. now it should be in focus. if the camera isn’t satisfied with the result it gives up and ‘can’t focus’… fortunately you can choose which areas your camera should be looking at (i believe you have a Canon Rebel XSi? 7 focus areas – all or 1-selected?)

    so… if lighting conditions are bad enough then the camera has trouble finding the things it needs to work with. this is why many photographers use the most light-strong lenses for (lets say) concerts. for example you are near the podium with a 85mm f1.2 lens and you can make pictures without even breaking a sweat while your neighbour has a 28-105 f3.5-f4.5 zoomlens and cannot autofocus…

    so here’s another advantage of a ‘big’ lens 😉 (p.s. the picture & dof are the same when used at (let’s say) f8, but the accuracy (more light to work with -> better accuracy), ease and speed makes the expensive one the winner…)

    if I’m not mistaken then the focus-point used (1 of those 7) temporarily lights up in the viewfinder when the focus is established. the funny thing is that some older camera’s look for vertical(ish) lines only and have trouble focussing when you hold the camera in portrait-position :) you can check this out by just drawing a line on a piece of paper, be close enough to fill the entire image with the piece of paper and focus on the line holding it in various directions.

    have fun! :)

    Posted by Marcel Otten | March 31, 2010, 8:20 am
  5. You’re correct I have the Canon XSi (9 point focus) but I never paid much attention to all the other points I just seem to use the one point in the center.

    I just tried the vertical line test… Took a black sharpie and made a vertical line on a green piece of paper. Switched the camera to the 9 point focus. No matter what direction I turned the paper it would focus on the line. That is so cool that the camera is smart enough to figure out what the subject is on a flat piece of paper.

    Thanks for the great explanation!

    Posted by admin | March 31, 2010, 3:10 pm

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