Help! Image SEO for ecommerce?

[starkj]

Hi, I'm working on an e-commerce site to that will be selling jewellery and need a little help with how image SEO works.

When adding a product with multiple photos, can I use the same alt text for each photo?

Does it help to include the product code in the image filename/alt text?

Can the image title be the same as the alt text, or is it not worth including a title?

Thanks