I don't know what of many options I could use here, since I'm barely out of noob diapers I'll post my dilemma to the most advanced readers. As you can see I have a cat in her senior years. She's very photogenic and as such she's a great test subject as well. My issue is not the quality of the the photo here but more of a tweeting opportunity. I can't recall off the top of my head the actual numbers. But I'm using a nikon D5100, 18-140mm at no more than 35mm from 3ft away. The area I'd like to learn how to improve without the need for post production is the apparent "screen-bow". As you can seen behind the kit-t a nice blur is apparent. But as you get away from it, it actually becomes annoying to the viewer and in my opinion, makes the eye stray from the subject. I'm not sure which way to go on this'un. Aperture adjustment, slow down the shutter (which is difficult with an animal that generally does have the slightest care to wait for you while you dink around with shutter speeds...... or is this one of those objectionable things which cannot be corrected and as such, live with it sissy boy?