It's a fast-focussing, close-focusing, lightweight and long focal-length tele ideal for many things, especially where you …

It's so much better than any of the foolish power zooms of point-and-shoot or mirrorless cameras.There's no zoom creep and it's easy enough to adjust even pointed up or down, although there is a little more or less effort needed if the front of the lens is moving up or down.Size is perfect; it's short enough to fit in any of my standard camera cases along with my other zooms.

The AF system needs to be active and needs to be set to ONE SHOT for this to work; otherwise the focus ring is ignored.For full time manual focus, set the AF/MF switch to MF. Focus pops immediately from one subject to the next, faster than our eyes can, and it really is silent for the first time.

On the other hand, And because of its size, the Canon EF 70-300mm f/4.5-5.6 DO IS USM Lens is an

You won't catch much attention when you are carrying this lens - an important safety factor for travelers to certain destinations. I was immediately impressed by the solid build quality of the Canon EF 70-300mm f/4.5-5.6 DO IS USM Lens. This is the very best I could do, and this is at f/40. The meter doesn't need to be on and the AF system doesn't need to be active; any time for about a minute after the shutter or another camera button was pressed the lens will continue to focus manually. Tous droits réservés.

The price? You are looking at, from left to right, the following lenses:

The 70-300mm focal length range is a very useful one. It's essentially instantaneous, and faster than most, if not all, professional zooms.

As indicated by Canon with the green stripe, Diffractive Optics (DO) elements were utitized in this lens to obtain the small size.
Where you buy your gear matters. If the lens does this, the image "breathes" by growing and contracting slightly as the dialog goes back and forth.The 70-300 has typical distortion: some barrel at the 70mm end and pincushion at the 300mm end.Many cameras can be set to correct for this, if not, you can use these correction factors in Half the lens is the mechanical zoom ring; grab and zoom the usual way. With the automatic lens correction of today's full-frame digital cameras, this lens works far better today than it ever did on 35mm film — and for about $75 used, it's the steal of the century.. I would have designed it to magically correct the speed of the manual focus drive as you zoom, while it instead behaves just like the focus ring in a conventional zoom.Focus breathing is the image changing size as focused in and out.


have had to take, feel free to help me As this page is copyrighted and formally registered, it is unlawful to make copies, especially in the form of printouts for personal use. The 70-300 DO exhibits a tendency to flare and contrast is slightly lower than some of Canon's better lenses. I grab my 100-400 when I have serious work to do, and I grab the 70-300 when I don't feel like carrying my 100-400 all day.



It's important to cinematographers because it looks funny if the image changes size as focus gets pulled back and forth between actors. With a minimum focus distance of 4.6' (1.4m), the 70-300 DO delivers a maximum magnification of .19x (not great, but useable).

If you wish to make a printout for personal use, you are granted one-time permission only if you Hold the MODE button to invert black and white.It is unlit; you'll need a flashlight to see it in the dark, just like conventional scales.Macro performance is great.

Hold the MODE button for a few seconds to invert the display to show white digits on black.Focus is completely electronic; the focus ring has no connection to the lens' optics.The lens needs to be on a camera and the camera needs to be awake for the lens to focus.For instant manual-focus override while in AF mode, just move the focus ring any time that you have your finger half-pressed on the shutter (or have the AF-ON button pressed). - Bryan As suggested in the review, one of the 70-200 L lenses such as the

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