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Creating a reflection of a cylindrical object on a glassy surface

Hi,

I would like some advice on how to create a reflection of a cylinder, for example, a can on a glossy surface in photoshop.

Simply flipping the image and skewing it will not work, due to the curve bottom of the can.

Is there a filter or plug-in i can pruchase to do this?  Or is there an easy, step-by-step approach?

thanks,
scott

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scottlum
Asked:
scottlum
1 Solution
 
Wooky JackCommented:
would turning down the opacity make a good reflection?
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SlynkyCommented:
Hi, scottlum,

Here are a few step-by-steppers that may help:

This one uses lettering but there are a few variations made that might be useful...

http://www.moesrealm.com/photoshop/reflections.html

And another one...

http://www.photoshopcafe.com/tutorials/reflections/reflections.htm

And here the tutorial adds a slight shadow to a screen capture...

http://www.scriptygoddess.com/archives/2003/08/28/realistic-shadows-and-reflections/

And one that adds a reflection to Motorolla's RAZR phone:

http://www.r4zor.com/tutorial.php?id=4

And here is a surface reflecton of something kind of round...

http://www.tutorialoutpost.com/count/5055

Hope these help a bit.

Regards,
Slynky
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scottlumAuthor Commented:
Thanks for your effort Slynky, however, none of these are useful.

All of the examples you cited give instruction on how to create a reflection of an object that has a bottom that is flat.  In the case of the last example, the artist did not create the reflection accurately because the middle donut-shaped reflection is NOT tangential to the real object itself.

If you place a can on a mirror and look it its reflection, you will know what I am referring to.  Simple flipping the can or cylinder object in photoshop does not produce a true reflection because the bottom of the can does not "match up" with the reflection.

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toddkellerCommented:
It really depends on the lighting and reflectivity of the surface you would like to represent.-plus your camera angle.-Reflections on a flat surface are exactly projected straight downward. So you'll need almost the underside of the image...sort of speak, if it was modeled, you would just negative scale it downward and have a replica of your ceiling above...anyway.

You need to know what the bottom of your can looks like if it has an indented bottom. If the bottom is not indented, just a cylinder, then the reflected image is straight lines straight down with an inverted top edge of your cylinder shown in the reflection, if that makes any sense. do you have a way of posting your image so i can check it out?- i could do it real fast for you.
t
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scottlumAuthor Commented:
Hi Todd,

I sort of understand what you are getting at.  Take a look at the apricot jar on this page:  http://www.dottafoods.com/

I tried to use the Andromeda filter to relect, however, it does not do the reflection correctly--it just reflects the image over an imaginary horizontal line.  but since the base of the jar is curved a simple 'flip vertical' will not work.

any step-by-step suggestions?

thanks again,
scott

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toddkellerCommented:
i'll check it out and get back to you,
t
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toddkellerCommented:
http://img92.imageshack.us/img92/2456/apricotcan2sj.jpg

Okay, so i totally see what you mean, i fast(really quick like-so excuse the quality..heh) painted these 3 versions which are pretty similar. I had to basically deconstruct the jar, because we do not know what the underside of the lid looks like i just made it up, but truthfully i would have to model this thing or take another picture of it from the bottom looking up to get the reflection right......or actually go out and get the can put it on a reflective surface i like and repaint it.....this was all just guessing.  thanks for the excersize though, it was fun finding out i didn't know how to do this easy...hehe. :) let me know what you think, --my conclusion was, you need to know what from the bottom of the jar up looks like(so under the rim)--i did this on with masks and all sorts of stuff. anyways, sorry for the non step by step procedure, i can tear what i did apart if you like it,
t
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scottlumAuthor Commented:
Wow---that looks pretty good!
I'm giving you the points and an extra 500 points if you give me a clear step-by-step instructions.

thanks Todd!

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toddkellerCommented:
hey, no problem, thanks for the points!!! no need for anymore, i'll try to think of a way to explain what i did, it was really about 20 minutes of messing around, but i'll write you out a step by step on this page a little later, glad it worked for you.
t
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toddkellerCommented:
oh, i see you posted another one, sorry i was late getting back to the board, i'll check that other question out, and if you like my answer maybe you could split the points with the people there?- whatever you like
t
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