Image/Symbol quality when 3D Revolve

I often use "3D Revolve" in Illustrator to add labels to product photos. (A lot of the products I take pictures of are in highly-reflective containers and it is very difficult to get the lighting just right. - Much easier to update the label portion of the image than to retake the picture.)

I usually get wonderful results. Easy for customers to zoom in and read the labels. But sometimes I come up with a file where no matter how hard I try, I cannot place a high quality label image.

Can somebody tell me the correct settings to ensure I always get high-quality results?

-- Michelle

Here are the steps I normally take:

• Save the original product photo as a .png with a transparent background
• Open the .png with Adobe Illustrator
• Sraw a triangle over half of the label area
• Click Effect > 3D > Revolve
• Adjust settings so that the revolve matches where my label should be placed
• "Place" the label image and drag it into the Symbol panel (I have tried the different settings for this)
• Open the 3D Revolve's property and use "Map Art" to place the label image

The results are usually very good. But sometimes the label image ends up being very low quality.

• I use plastic shading and invisible geometry
• I have tried different sizes and resolutions for both the base image and the product label, including sizing the label just right so it doesn't need to be resized when I map it.