Filemaker doesn't care whether a table is in one file or another. You can accomplish what you need by relating the table from file 2 to the relevant table in file 1. Then simply place the container field containing the image on a layout from file 1. Each file will need to be listed as an External Data Source in the other. You can read up on this in Help.
Ok thanks! I will look into it. I guess the biggest problem was that I did not know what I was exactly looking for (in terms of solutions) in help/developer reference/google.
Here's one simple way.
Let's assume your image file has three fields: ImageID (auto-entered serial number), Image ( container) , ImageName (text)
In your main file, Open manage | Database | Relationships and click the button on the bottom far left just above the Print button to create a new relationship.
This brings up the Specify Table dialog. Select Add Filemaker Data Source from the table drop down.
In the Open File dialog that pops up, find and open your image file. Since there's only one table in this file, it's already selected for you, click Ok to dismiss the Specify Table dialog.
Now you have a table occurrence in your Relationship graph for your external image file and you can treat it like any other table in your file.
Define a field in the table of layout where you want to look up an image called ImageID. Let's call this table "Main".
Now define a relationship between the two tables:
Main::ImageID = ImageFile::ImageID
Place Main::ImageID on your layout and format it with a value list that has the ImageID numbers from ImageFile::ImageID in column 1 and the ImageFile::ImageName field in column 2.
Now place the Image container field from ImageFile on your layout and when you select an Image in Main::ImageID, the corresponding image from your image file will appear in the image field.
This is a basic set up. There are other ways available that make it easier to work with long value lists in order to make it easier to find the desired value list by name. You can even set up a portal to the Image file that displays thumbnails of the images along with their names where you can click a listed image to add it to your current record in Main.
Thank you Phil. That is about where I got as I looked at your post. I double-checked everything and sofar it appears to be working. However, I am looking for a way to break it and seeing any flaws that may exist. (Currently, the only flaw is that the image gets stretched since it is a container field.) Regardless, I guess I am one step further than I was previously on my goal of streamlining the whole form creation process I do for work.
Enter layout mode and select the container field.
Then use the inspector to change the graphic format options for your container field. Select the "Maintain original proportions" option and the images will not be distorted.