Image Manipulation Finishing that it looks real - but how?

[hansmaulwurf1]

Hello!

 

I try to figure out how it works to insert some Objects in a Picture, and finish it up that it looks like the part of the image.

 

I rendered with Rhino + Vray without an HDRI or Sunlight.

 

Here you can see the psd: https://www.dropbox.com/s/9tpm512a5eoc283/Karlskirche_panorama.psd

[Matt McDonald]

Your question is really general try to be more specific and people will more likely to offer you advice.

 

Some general tips: try and match the properties of the camera lens used to shoot the original picture. you should probably use the vray sun or an HDR to try and match the lighting properties of the original image. the material you have applied to the hovering boxes doesn't really look like a material I know so they don't look very integrated.

[jaysonjames]

Image manipulation nowadays a very popular in photography. U can try it..