Realistic reflections

[MR.BIG]

Hi to everyone : )

Can someone please explane to me how to make realistic reflection in case when object doesnt have flat bottom ?
Or , we look at the object from different angle.
Like this plastic tube on the picture .......

I have tried but this is absolutely not right

[AdamZx3]

Duplicate the object on another layer, then flip vertically, align like in the picture, then add a mask using a white to black gradient to make it fade away. Adjust the opacity to 30% or so (depending on object and background).

As as on an angle that can be tricky, depends a lot on the object and angle. I did one on a lowrider truck and you could get away with using the perspective and skew adjustments under the free transform tool, and a heathly dose of cutting pieces and cloning in the gaps...not all projects will allow for this.

Do you have an image we can see, that would help.

[KR1156]

if you absolutely cannot re-shoot this with reflection, then try duping the masked out cylinder, flop it vertically, and use the transform mesh tool to do your as much as you can, then finish up with some liquify filter to round it out as best as possible.

try to do as little as possible in liquify, depending on your resolution, because it will tuen into whole 'nother project to replace those stretched out pixels you ended up with after liquifying it.

here's a ROUGH sketch of how it should look, somewhat.

[MR.BIG]

Thank You all for helping me out .....

I can not reshoot those objects , because they are 3D models

I will prepare the image tonight to show you what I need to do, so ...... I`ll need more help

[pixelzombie]

if they are 3d models, can't you make the reflection during the rendering?

[AdamZx3]

Ooooh ic what you mean, I thought your pic was the desired end result Your cylinder needs some shadowing to make it look 3d.

I agree with pixelzombie, it would be much better to do it in your 3D app. If you cant get it to reflect on a 3d plane then try and mirror it on the x or y axis and pull it down on the z axis until the bottoms are touching. Add a different shader and reduce the opacity so it fades away...or do that in photoshop after if you want.

**edit
The mesh might show through if you reduce the transparency so you see through to the other side...I forget how to make it not render anything that might have polygons facing the camera, its been a few years since ive used 3dsmax or maya.

[MR.BIG]

Thank you all .... again ....... first I`ll try to render reflections in Maya (but I`m not that good in 3D apl. )

This is the almost final image ........ and these reflections are no good at all ...... tonight I`ll try to make them by yours advices ...

I must pull this because I have whole series of ads that I need to do with these plastic containers..

[amica999]

There is a nice video on http://www.russellbrown.com/tips_tech.html on this topic.

[KR1156]

why don't you upload 1 of those containers, by itself, and we'll take a stab at it and see if we can help you with it, that's if you can't do it in your 3-d program.

[Cassidy]

It looks like it's a perspective issue to me

[Dave.Cox]

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.

[Markzebra]

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.

[MR.BIG]

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

[MR.BIG]

I`m doing something wrong .... Markzebra , can you give more instructions please

[Dave.Cox]

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.

[pixel_monkey]

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.

[cainam]

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.

[Markzebra]

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

[MR.BIG]

I`m almost there

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


THANK YOU VERY MUCH

[pixelzombie]

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

[pixel_monkey]

Originally Posted by cainam

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.

That looks good, Mark. Photoshop is sufficient for what he's trying to achieve. Since he mentioned the bottle is a 3D object, then it should be done inside 3D to get what's called, "true reflection". It's just a better approach. Just imagine trying to get the reflection on a 3D car that includes the under carriage with Photoshop instead of 3D.

I`m almost there

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


THANK YOU VERY MUCH

Did you use a different image for the reflection? It's all off and it reads "preload" instead of "reload".

[MR.BIG]

My mistake, wrong container ( i have whole bunch of them) , but the result is OK

[MR.BIG]

Originally Posted by pixelzombie

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

I see , ..... hmmm, maybe I should get Maya

[Dave.Cox]

To get a good reflection, you should copy and flip the image that you want to reflect. Your last effort is offset, since you used a different image. If you copy and flip the original image, you will get a reflection that matches.

[Markzebra]

Your shot is made using a wide angle lens, or a zoom, this doesn't help. You can try Photoshop's lens correction to make it sit better

[pixel_monkey]

Originally Posted by MR.BIG

I see , ..... hmmm, maybe I should get Maya

Open up your scene file in Maya, go to the same camera view where you had these bottle rendered, flip the geometries upside down, turn on alpha channel in Render Settings and render. You'll still get true reflection that way without figuring out how raytracing works.

OR...

Like others have already mentioned, flip your image in Photoshop and warp it.
Just give it some time. You're on the right track.