I've been doing SEO on my business's site for years and have got good results. I've always used image Titles and Alt Text text. Our blog posts are image-intensive, often with 100-200 pictures (not surprising since we're photographers). For any given blog post, I've tended to have a uniform image Title for each image and then a more specialised Alt Text tag giving a description.
A typical image on one of our blog posts would be like this:
Image filename: wedding-photography-at-so-and-so-venue-001.jpg .... 002, 003 etc
Image Title Attribute: Wedding Photography at So-And-So-Venue by Our-Company-Name - this would be the same for every image in the blog post.
Alternative Text: Bride and groom exchanging vows during wedding ceremony at so-and-so-venue - this would be tailed for each image.
So my question is - is this right? The Moz help page for image SEO is actually incorrect in one aspect:
https://moz.com/ugc/10-tips-for-optimizing-your-images-for-search
"Alt text (short for “alternative text”) is used to highlight the identity of an image when you hover over it with your mouse cursor. It also shows as text to all users when there are problems rendering the image."
This is not the case. Hovering over the image in Firefox, Chrome, Edge and Opera ALL display the Image Title, NOT Alt Text.
Thoughts?