So here we go. First, the lenses will work with the cameras, they "may" or "may not" auto focus. I know the Sigma 28-90 won't auto focus, (I have that lens). Look at the mount on it. Look at where the mount has the screws that hold it on. There's one that looks like a regular screwdriver. That's what drives the AF. Any of the other lenses that have that won't AF on the bodies you're looking at.
About the pictures being better. That's really a loaded question. First, what's wrong with your pictures now? The 200 is a very capable camera. Do you want to take pics of your tank? Do you use any post processing?
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Jesse
I'm not saying I'm Batman. I'm just saying nobody has ever seen me and Batman in a room together.
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