Hi Ben,


I don't know your exact shooting conditions/environment, but 10-30 secs for a portrait seems like a difficult shot to get!


Besides the obvious equipment - tripod, remote shutter release (or the built-in self timer) maybe some composition might help you get the shot:


Have your subject sit down, or even better - lie down. This way she can hold still for 10 seconds probably. If you can take a picture of your subject with closed eyes, your subject won't have to blink.
It can be hard though to make a shot like that and not make it look too staged.


Experiment with various shutter speeds, but I wouldn't try longer exposures than 10 seconds. Sitting perfectly still for 10 seconds can be really challenging.


Btw, what ISO settings and camera/lens do you use?



Tom





Btw: I feel silly advising you, as (judging by your photos) you seem way more experienced than I am... I have peeked into the forum from time to time to get some lens suggestions. Bryan's reviews rock, particularly his ISO-charts and vignetting charts help make a decision!