PC Monitor as a background

[sunlitsix]

Just experimenting with certain lighting conditions and metering modes tonight
would like some C&C on these please!

For the background i just created a white 1280x1024 image on photoshop.
Unsure about the cropping on them too, would it be better to crop the small box underneath the object off or not?

Dirty cup

 

[sunlitsix]

thanks for the comments
anyway, been thinking more about this idea tonight. would i benefit more if i had something reflecting some light back onto the object or not?

 

[divine`]

Reflecting would be good however it would seem your worst problem is the obscene amounts of chromatic aberration you're getting...

 

[sunlitsix]

yeah i see what you mean on the cup shot especially, whats causing that?
is it the PC monitor being too bright or something related to the camera setup?