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Realistic reflections

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  #11  
Old 10-14-2007, 04:33 PM
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Dave.Cox Dave.Cox is offline
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Re: Realistic reflections

The problem that I see with the reflection in your image is this. You have copied and inverted the three images as one. The left and right containers are set back and behind the middle container. You should separate the portions of the image out, and move them up so that the images each start their respective reflections and the base of the container.
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  #12  
Old 10-14-2007, 05:27 PM
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Markzebra Markzebra is offline
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Re: Realistic reflections

Displacement maps - when a cylindrical object like this has been shot from an angle you need to make the reflection follow the contours of the shape above. There is only one way I've discovered to do this- you need to make a displacement map using a reflected gradient. Then go into the displace filter and choose a vertical scale, taking horizontal to 0. I've had to do this for many Packshot items before.
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  #13  
Old 10-14-2007, 06:11 PM
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Re: Realistic reflections

Dave.Cox
This image is like that (reflections) until I solve the problem, I did it just to see what is going on ...

Markzebra
I`ll try you way right now ..... thanks
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  #14  
Old 10-14-2007, 06:29 PM
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Re: Realistic reflections

I`m doing something wrong .... Markzebra , can you give more instructions please
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  #15  
Old 10-14-2007, 11:13 PM
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Dave.Cox Dave.Cox is offline
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Re: Realistic reflections

My mistake. Is this what you are looking for?

copy the image below the original, flip vertical, and enter free transform warp mode and select the arch warp. Adjust to fit. Mask the edge to the original to fit.
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File Type: jpg Koloseum-pillars2-dc.jpg (64.8 KB, 61 views)
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  #16  
Old 10-15-2007, 12:28 AM
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Re: Realistic reflections

It'd be best to render the reflection inside Maya instead of recreating it with Photoshop. Here's a quick example that I did using Maya renderer. I just used default reflectivity for the Blinn material on the floor along with 2 directional lights in the scene with raytracing turned on in Render Settings. You can tweak all the settings you want to get the result you're after. Also try to render the reflection with Mental Ray, it works a lot better with raytracing.

Here's another way that you can try. Mirror your object in the Y-axis in Maya and render it by itself, and comp it in Photoshop.
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File Type: jpg can.jpg (41.6 KB, 38 views)
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  #17  
Old 10-15-2007, 06:22 PM
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Re: Realistic reflections

The choice is 3D or Photoshop.
3D will be more accurate. But I don't use 3D, so I would have to do it in Photoshop.

This is a 10 minutes example with warptool.
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File Type: jpg bottle-web.jpg (84.7 KB, 47 views)
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  #18  
Old 10-15-2007, 07:15 PM
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Markzebra Markzebra is offline
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Re: Realistic reflections

Oops, yes there is an easier way these days, its to do what Dave Cox has suggested and use the Arch warp function. Just choose Free transform/warp and use the Arch set to a negative value- One tip, if you hold down the shift key and hover over the word "bend" the double headed arrow will allow you to move the bend more quickly while you adjust to get it looking right.

Used to have to do it with the displacement map in the old days when I had to do 100's of these, but forgot about that in my last post - this is easier, sorry
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  #19  
Old 10-15-2007, 07:47 PM
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Smile Re: Realistic reflections

I`m almost there

Some more work and my boss will love me ....


THANK YOU VERY MUCH
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File Type: jpg reflection.jpg (34.1 KB, 49 views)
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  #20  
Old 10-15-2007, 08:31 PM
pixelzombie pixelzombie is offline
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Re: Realistic reflections

i'd say it looks pretty good, but the angle seems a bit odd when you compare it to the sample i've attached...

Last edited by pixelzombie; 02-21-2008 at 06:11 PM.
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