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ribandhull First, the answer is no on the whole if the only way you are going about ranking is with keywords in tags. But, you are going to have some text, images, and other parts of the page that need SEO. So, make sure your images have appropriate alt text (kw=wedding photography, alt txt = Jones Wedding photos - bride and groom). Make sure each page has good title tags and H1's. Make sure your 1% text is relevant to your keywords and you should be able to do fine considering this is what a lot of photographers do. Another helpful hint is each photographer needs to take advantage of Google Places (+1 ) listing.

Definition and explanation by Google: http://support.google.com/webmasters/bin/answer.py?hl=en&answer=47334