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Submitted: October 14, 2012
Image Size: 6.3 MB
Resolution: 3523×2140
Submitted with: Sta.sh

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Camera Data

Make:Canon
Model:Canon EOS 5D Mark II
Shutter Speed:1/256 second
Aperture:F/5.6
Focal Length:400 mm
ISO Speed:2000
Date Taken:Oct 13, 2012, 11:08:43 AM
Lens:EF100-400mm f/4.5-5.6L IS USM
Software:GIMP 2.8.2
Sensor Size:23mm

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Out-and-About -- Grey Squirrelby =Okavanga

Photography / Animals, Plants & Nature / Wild Animals

Testing my new EF 100-400 mm L IS 4.5-5.6 lens.

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*Enkased Nov 13, 2012

excellent sharpness, and I really like the shot all around.
I've heard that lens is a beast, Nikon's version (80-400) falls short of it in testing. have fun with it!

=Okavanga Nov 14, 2012

Many thanks - I was pleased with this as a hand-held shot, and I think it shows what the lens can do. However this is a system that needs a lot of practice and thought. I had auto ISO and Av fixed so I let Tv do the work.

Cheers

David

*Enkased Nov 14, 2012

I never leave my auto ISO on, but Canon really seems to be better dealing with noise than Nikon. That is my biggest letdown with my D300, I was hoping to be able to shoot in the 800-1200 ISO range and be happy - therefore being able to leave the auto function on - but it simply can't handle it.

=Okavanga Nov 15, 2012

Hmmm... don't know anything about Nikon in that respect. On the Canon 5D MkII, the auto ISO can work like a charm and does not seem to go OTT. However, I have set the high ISO noise filter to strong in custom settings. Overall, thiugh, I am still learning with this big beast.

Cheers

David

*Enkased Nov 15, 2012

oohhh a high iso noise filter... i need to go look in my manual

=Okavanga Nov 15, 2012

These in camera filters seem to work a treat at least with Canon. Maybe they do sampling of the noise at the point of exposure and then apply the filter based on that sample immediately after.

David

*Enkased Nov 15, 2012

Nikon has a long exposure noise reduction system that is actually very interesting. The way it works is the camera actually takes two images and then combines the 2, in camera, to reduce the amount of noise in the final image.

The only bad part about this is that when you activate it it takes twice the time. Say you are taking a 30 second exposure, when you fire the shutter it stays open for thirty seconds, then closes, then creates the alternate image, again taking 30 seconds. So the entire time becomes just over a minute, and being that I usually take long exposures at sunset/sunrise when time is moving fast, I rarely actually use it, even though it does actually work well.

=Okavanga Nov 16, 2012

Interesting.... You would only get the square root of 2 noise reduction that way, but that may be helpful with high frequency noise. If you have a static subject and short exposure times then taking 4 shots and averaging them will reduce noise by a factor of 2, but this is impractical for long exposures. I used to know quite a lot about noise reduction, but modern techniques are way ahead of me now.

Cheers

David

(1 Reply)

*kayandjay100 Oct 16, 2012 Hobbyist Digital Artist

Such a cutie, David ~ was this taken near your home?

Coco

=Okavanga Oct 16, 2012

Thank you, Coco - yes, we have lots of greys here as we live in a wooded area. This shot was about 50 meters from my front door. Usually, you cannot get close enough for such shots - you do need a good telephoto lens such as this.

Cheers

David

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