
Re: Forget DSLR....Use Compact
Shutter eventually break.
Last crash we had was an EOS D600/T3I which broke after 276k or so shots just 3 weeks ago.
From a my point of view (long lasting timelapse projects), I would add to what have been mentioned previously:
DSLR:
+ very stable
+ wide selection of lenses
Compact:
- unstable, tend to crash after a few days
- remote control over PTP not available on Canon compact since 2009 (so no new cameras)
- Only a few models can be electrically restarted if they crash (Powershot S50-80 series)
- No night shots, just compare
http://toronto.webcampak.com/ (Canon t2i) with this
http://buhl.spottrotters.com/ (Powershot S50-S70) at night time.
I would say that it might be better to consider the camera's shutter as something which is expected to fail, then you can keep a spare camera on-site, when/if shutter break, you simply replace the camera and send the other one to repair.
The interesting debate then is to choose between an entry level, a mid range or a high range DSLR. On this topic it really depends of the project, how critical it is and the photographer in charge.
High range DSLR have much higher expected shutter life, on the other hand if your camera is installed in proper conditions it's likely that an entry level DSLR will reach (or come close to) expected shutter life of a mid/high range DSLR.
No specific guidelines here, its' really on a per-project basis.