Why do you produce a gallery?
1. To show off your best work
2. To impress potential clients
3. To prove to potential clients that you can already produce what they want
4. To solicit contacts and relationships and dollars from people who are impressed enough to want to pay for your expertise.
So, You had better find out early what your viewers expect to see...and what they think is impressive enough to e-mail you or buy your product. You have to give them images that they want, that exceed their expectations or meet their needs, and you have to make such a visual impression that they will contact you.
You would most likely have several galleries...each designed to attract and motivate a certain segment of your potential customers or admirers. One gallery for landscape, one for beauty shots, one for fashion, one for commercial products for example.
What are you good enough to impress me with or sell to me? Show me that! And it better be good!! Show me only a few images...thats OK! If your viewers see average or boring or several poor images...you are done! They make an impression of you from what your weakest shot looks like!!! So, dont ever put weak shots in!! Give me 4 great strong images...not 12 ho-hum images. Impress me. Knock off my socks. But dont show me your average stuff. LESS IS MORE sometimes. I respect a person who gives me 4 great images...and I click away from someone who cant edit their images... and leaves in some terrible ones...because he thinks Quantity makes a better impression than Quality.
What are the visual characteristics of some of the best galleries you have seen? If you cant tell me...then you havent done your own research. If you havent collected 12 sites that absolutely amaze you...then you wont know what good quality looks like in your own site. Unless you have studied and torn apart the good sites...you wont know how to make your own killer site!
Every site has to meet the specific needs of the people coming to it. If it meets their expectations and more...then you have a good, effective and relevant site that has a chance. There has to be a good match up...and sometimes several venues will look totally different because they are designed for different kinds of end customers... with different expectations and visual needs.
There are 10+ great ways to drive people into your site...that is another discussion.
Cheers,