F -Stop 4.5
Exposure Time 1/20 sec.
ISO Speed ISO 400
The light was a little poor in my front room at the time and the cat would not keep still and play my game
At F 2.8 you'd have been able to take the shot at 1/50th of a second at iso 400 which would have made the shot sharper.
Other good options would have been F2.0 at either 1/100th and iso 400 or 1/50th at iso 200. You'd have to be very careful to focus on the eyes for this choice though as your depth of field will be very narrow. At 1/100th of a second you won't be so dependant on the cat being perfectly still either.
I don't really know what the 40d is like at iso 800 but that might be an option too, better to have a shot be sharp even if it makes it a little noisier. Low light is always a balanceing act and hard to chose the best option but making sure you have a decent enough shutter speed should be priority number 1.
She is a real beauty though and you've done really well for someone getting started, indoor photos of pets is difficult. We have so many hundreds of blurry pictures of our rabbit from when we got started.
