Re: Canon Cameras

To: David Stowe <>
Subject: Re: Canon Cameras
From: Alistair McKeough <>
Date: Fri, 26 Nov 2010 08:39:12 +1100
My experience mirrors David's. In fact, I sold the 2x converter for that

Gitzo tripod, Markins M20, Wimberley sidekick, all locked down tight and

Are the images good? Yes. But you do notice they're not *quite* as sharp and
I find it annoying! Maybe I'm too much of a pixel peeper though Akos - I
know Art Morris happily uses a 2x when he needs the reach.

Also, bear in mind that Dave is the sort of lucky bugger that can get his
hands on an 800 when needs the reach... :)


On 26 November 2010 08:22, David Stowe <> wrote:

> Akos
> The 500mm is such a sharp lens that you get used to a certain level of
> quality. With a 1.4x I don't really notice the difference, whereas with a 2x
> I do notice a difference in quality. Nothing to do with technique. I also
> have reasonable shots with stacked converters but you could never say they
> are as sharp as the 500mm by itself.
> Obviously its easy to make these images look sharp when resizing for web
> forums and adding sharpening etc, but at 100% i personally find a
> difference.
> Cheers
> Dave
> On 26/11/2010, at 7:43 AM, Ákos Lumnitzer wrote:
> David
> I have to disagree about the Canon EF 2x. Maybe you have a bad copy or I
> have a fabulous one. Under the right circumstances and using solid technique
> I most certainly get more than good enough quality images and I don't even
> use a 500/4L yet. Even stacking a 1.4x and a 2x I can get very good results
> (hand holding!). Just food for thought. I admit, I am no pixel peeper, but
> certainly have a very good grasp of this funny thing called photography and
> professional nature photographers world-wide like what I am capable of
> producing.  :) What my point is that there are many factors to consider with
> converters; light, lens, technique, converter quality (individuals most
> likely differ) and so on. I won't even touch the subject of cropping
> (excessively) as many now do because they have 15+ megapixel cameras.
> respectfully yours
> Akos
> (just an amateur in many worlds) :)
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