Image names, product names, alt tags the same. Image names with various sizes the same?

[Asteg]

I am rebuilding my site and wish to provide the best and complete information about a product and the image, and alt tag for the user.   Is it ok, good, to use the same name in a image file name, alt tag, title tag AND product name?  It seems to me they should be the same. Why change the product, name , image name, alt tag, and on the product page the title tag?

I am working with a product that has the same base name but with more options and duplicate image file names but with different sizes of the image.   Example...  SLR Camera Strap with a dependable grip pad and nylon web is the core product.  Options are kevlar web, rapid releases and then rapid releases with vectran cord or kevlar web.

slr-camera-strap-dependable-grip-pad-nylon-web_1500p.jpg,  slr-camera-strap-dependable-grip-pad-kevlar-web_1500p.jpg,  slr-camera-strap-dependable-grip-pad-large-rapid-release-kevlar-web-ends_1500p.jpg,  slr-camera-strap-dependable-grip-pad-large-rapid-release-vectran-loop-ends_1500p.jpg,  slr-camera-strap-dependable-grip-pad-large-web_1500p.jpg,

Then... there will be the same image but with different sizes of the same images being built internally and held in the images folder for various devices such as slr-camera-strap-dependable-grip-pad-nylon-web_400p.jpg,   slr-camera-strap-dependable-grip-pad-nylon-web_100p.jpg   and on and on....

As a secondary question the file names are long but that is what it takes to describe it.   If I remove the key yet repetitive base name XX camera-strap what I end up with is

dependable-grip-pad-kevlar-web

What to do?

What to do?

[MonicaOConnor]

If I understand your post correctly you are trying to figure out the best way to optimize your alt tags for different versions of the same image. Alt tags should really focus on the keywords you are targeting on a page. I can give you an example from my site:

Product - Generac 6244 20kW Guardian Series Home Standby Generator with Aluminum Enclosure and 200a Transfer Switch (That is a mouthful)

Keyword - Generac 6244

URL - apelectric.com/generac-6244-20kw-guardian

Title Tag - Generac 6244 | 20kW Guardian Generator | Generac Generators

Image Alt Tag - Generac 6244 20kW Guardian Series Generator

Meta Description - The Generac 6244 has been our customers go to 20kW home standby generator. This unit is in stock and ready to ship same or next day for FREE. Call us today for more information, 123-456-7891

The image alt tag should reinforce your targeted keyword and include a shorter description than your description. Focusing on putting the most important part of the product first, then a secondary description and perhaps then a size. You don't want to have several of the same alt tags on one product, but sometimes this is unavoidable. I would say break the more specific description up between the numerous pictures. In my example I would do something like this:

1 - Generac 6244 20kW Generator

2 - Generac 6244 Guardian Series

3- Generac 6244 Home Standby Generator.

The alt tags are a good place to reinforce your keyterms and let the engines know the whole page is really centered around that specific product. It is also how Google Images display certain pictures, they use the alt tags.