The issue is, do you want to store the image IN Access, or just a link to the image.
If you want the photo in Access, then use the OLE DB data type, and when you add the control to a form, there will be options to import an image (right click on the control.) This will very quickly result in a very large database, and you will need to split it (front end, back end for data, back end for before photos, back end for after photos, etc).
You can also store the path to image files, which takes up much less space, although everyone who accesses the database will need to be mapped to the network storage location with the same drive letter, etc. This would be the case with a split database as above.
I did a search at Microsoft.com for this and came up with:
Use VBA code to display images
If you need to work with a large number of image files and you want to display a different image with each database record, using some VBA programming can save you time and storage space. You store your images on your hard drive or network, store the paths and file names of your images in a text field in your database, and then use VBA code to read the path information and set the Picture property of the Access image control.
Keep in mind that this process links to your image files — it does not bind them. Also, if you move your database, you also need to move your images. To see an example of this technique, start the Northwind Traders sample database and open the Employees form in Design view.
Open the table to which you want to add the field in Design view .
In the first blank row of the design tool, under Field Name, enter Image.
Click the next field (the field in the Data Type column), and select Text from the list.
Save the table.
Follow the instructions in this Microsoft Knowledge Base article:
How to display images from a folder in a form, a report, or a data access page
Caution Your database users can view the paths to your image files. Unless you trust all possible users, remove any personal information, such as your name or the name of your computer, from the file paths. Also keep in mind that you can use relative paths to refer to pictures.
For example, if you place your database on a network, such as \\ServerName\ShareName\, and store your images in a folder on that share, such as \\ServerName\ShareName\Pictures, you don't have to specify the entire path.
So, instead of using \\ServerName\ShareName\Pictures\Picture.gif, you can use only the portion of the path that is different, relative to the location of the current Access file, like this: Pictures\Picture.gif.
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