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    • Amazing how light it is for an 800mm for that matter how small it is as well. The Images are all so sharp and clean out of it. It's all up a very light weight system That gives great results even at low shutter speeds with the stabalisation. A few things you don't have to think about any more so leaves the mind free to get better compositions. Certainly happy wiht what I've been getting. Funny enough last week I went to a Sydney zoo here with Canon, they had before hours access, so an opertunity to shoot without the crowds.

    • I am impressed with the sharpness of the fine hair in all your images @Chris and @Glenn_Smith

      Small aperture lenses sometimes get complained about due to diffraction, but these look quite sharp and well resolved with nice bokeh in the backgrounds. Very interesting.

      I see the 800mm is $200 more expensive than the 600mm too. Hmm - so many choices

    • Amazing closeups!

      Whenever I visit a zoo, including one in Oakland, I can't seem to get close enough to the animals. I guess the right solution is to get a super long and fast lens like yours. Too bad Sony doesn't seem to have anything like this lens for my Sony A7s.

    • Yeah, that little baboon stole the hearts of the spectators. So many oooos and ahhhhhs among the spectators. Mom looking for bugs, I guess in this shot?

      Mom held on to his tail the whole time and dragged him around.

    • To call f11 a fast aperture is a bit strange - it is 3 full stops slower than an f4 lens, that is it lets in only 1/8th as much light for a given exposure as an f4 lens. Or 1/16th the amount of an f 2.8 lens at the same shutter speed.

      An f11 lens is so slow that many folks thought Canon was joking when it was introduced.

      That said, it seems to be a very useful tool within its limitations. I really wonder how well it will do for birds in flight after sun down - like chasing short ear owls, shot up to 20 minutes or more after sunset. A stop of two of light then will be really critical for AF and shutter speed.

      I am really impressed just how well the images of the baby baboon in the deep shade look. Speaks highly of the R5 sensor and the f11 lens

      I will probably buy either the 800 or the 600 despite the aperture. Small enough, and light enough, and cheap enough, and sharp enough to be very useful in better light.

      I really do wish Canon would deliver an f4 600mm DO lens - now that would be something to crow about.

      @Vilen Can't you find a Sigma or a Tamron 150-600 style zoom for a Sony body mount or use an adapter for your Sony body? I found this Sigma 100-400 F4.5-6.3 GD DN lens in this review

    • All day long I had my thumb on the shutter speed dial because I could handhold all the way down to 1/200th if the subject was still, but at 800mm any motion from the subject can blur so I preferred to be at 1/1000th for baby baboons who are all over the place, and 1/2000th for fast moving birds in flight.

      That put the baby baboon shot at 10,000 ISO... It's pretty clean at that ISO (amazing!) but hiding the noise in the fur helped.

    • Just imagine suggesting that ISO 10,000 images might be acceptable a decade ago - we'd have been laughed out of the room. Your images really do look very nice, but I have shot enough wildlife back in the shadows to have an idea what the exposures were like, back there.

      I learned much of my bird shooting from Harry Behret - who said he ALWAYS shot birds at 100 ISO. It took me a trip to Florida to realize he was shooting white birds in direct tropical sunlight. I suggested he try shooting deer in deep shade 30 minutes before sunrise to see how the other half lived. 😄

    • One from yesterday a Superb Fairy-wren (Malurus cyaneus) in the Australian Botanic Gardens, Mount Annan. Shot with the Canon R5 and Canon 800mm f11. 1/1600 sec, f11 ISO2500. Background achieved by positioning myself to get a decent separation between subject to background.