Considering buying the HS30

Ergonomics, the engineering science concerned with the physical and psychological relationship between machines and the people who use them.

http://encyclopedia2.thefreedictionary.com/ergonomics

​HS30 does look DSLR-alike, feels DSLR -alike, but does not produce DSLR quality images, and  not expectedto do that. Sorry I can not put it any simpler and any more factual. As for lens change - I tried to do it on a dusty airfield in wind - that was an overrated experience