Graininess...

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rubybgold New Member • Posts: 10
Graininess...
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Hi all. I'm a newbie to this forum and look forward to folks' thoughts on this. I recently upgraded from my D3300 to the 7500 and took it for a spin yesterday with a Tamron 100-400 lens. Part of why I bought the 7500 was because of its reputed performance in low light situations and the number of ISO options available with supposedly far less visual noise/graininess. I also got the Tamron 100-400 as an upgrade from my old kit lens 55-200 that I had with the 3300.

I was out at the end of the day, hour or so before sunset, sky still quite light, shooting migrating birds. In manual mode, set my shutter speed to 1250 (to capture fast flying, erratically moving birds), Ap was 6.3, which was the widest I could get with the lens fully extended to 400mm, and I set ISO to 800. Happily, I was able to capture some really great looking shots of the migrators in low light, but, at even close to full size, all of them had too much grain for them to be good images. I was disappointed, given that 800 was not a very high ISO for this camera, and, given the reputation of both the camera and the lens, I expected the images would be much sharper. I welcome thoughts on why I got so much grain, and how to get sharper images in a similar situation next time. Thanks in advance!

Nikon D3300
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