Topic: Number of images in one Auto Viewer gallery

I would like to get peoples opinions, purely from a "good web design" point of view, about the maximum number of images in one AV gallery.  I am about to add over 150 images to my AV website and am concerned about how many images will visitors watch in one slideshow. Currently, my largest gallery has 27 images-- http://www.blurrylens.com/places

I now have 3 new portfolios to add that have over 50 images each. What do you think? Should I put each new portfolio in one large 50 image gallery or break them into sub galleries? I realize people can click the next arrow at anytime, but 50 images would take several minutes to play through. Is this too much to expect for the average visitor?

Polara
www.blurrylens.com

[url=http://www.blurrylens.com]www.blurrylens.com[/url]
[url]http://blurrylens.etsy.com[/url]