Hi! Just started with Nginx after reading it reached 1.0. Congratulation!

I'm trying to get my test site to return a "missing image" icon when an image is missing, but have a 404 logged so I know I messed up something. I want to specify the images name without file extensions, in case I move some from PNG to JPG, or the other way around. My problem is that try_files doc says last path MUST exist. I would like last path to be $uri and cause a 404, not a 500. Tried using error_page to convert 500 to 404, but did not have any effect. Thanks for any advice!

location ~ ^/img/[^\.]*$ {
try_files $uri.png $uri.jpg $uri.gif $uri;
error_page 500 =404 /img/missing;
}

location /img/ {
error_page 404 /img/missing;
}

location = /img/missing {
rewrite .* /img/icon/missing.png;
}