Yea, I've pretty much got the go ahead but now I think I am just over thinking things. I tend to do that. I research things to death. For example. Initially I had settled on getting the A540 and the Canon housing (the best I've found is $345 total for both at Adorama). Pretty reasonableprice for both I would say. Buuuuuuttt...the more I read the more I see that the A620 is also very popular, probably even more so than the A540 and I can still pick that camera up at a fair price as well.
There's my problem, I don't know enough about photography, underwater in particular, to know which is the better choice. I do know that for now, in order to keep my initial cost at a minimum, I will without a doubt go with the Canon housing regardless of which I choose. I just can't justify a $400 Ikelite housing at this time when, from what I have read, the Canon housing appears to do just as well and is so reasonable in price. I know that the A540 housing allows for add on lenses and the A620 does not but I have no idea if this is a deal breaker for the A620. I mean, is this something that I need to consider a total and undeniable deal breaker if I plan on using the Canon housing due to the fact that it will not accept add on lenses?
The A620 has 7.1 megapixel and seems to fair only slightly better in reviews which I have read. I doubt my eye would ever see the difference but I don't know. The A620 has 4 AA batteries as opposed to 2 in the A540. The screen is slightly smaller on the A620 but is higher in resolution than the A540 (which I assume will probably not be a factor underwater) and rotates like my current A80. I like this feature as I can close it up when not in use and it won't be as likely to get scratched or damaged.
My biggest dilema is in regards to the housings and the fact that one will accept add on lenses and one will not and whether or not this is of a major importance. Also, and this is just my observation, the A540 housing looks like it may be a little better when using the camera's flash. By that I mean the flash on the A540 housing doesn't look like it is as obstructed by the part of the housing that the lens fits into as it does on the A620 housing. This part of the housing just appears to be much larger on the A620 than it does on the A540 and I wonder will this allow the flash on the A620 to be as effective at eliminating a shadow in the lower right hand corner of my photos or will it actually contribute to the problem? Again, I have no idea. I only bring this up because to be quite honest I really doubt I will be purchasing an external strobe any time soon. As most of my diving will be done in clear tropical water, mostly in the daylight hours, I may not even need a flash assuming I can learn to use my manual white balance. Or at least I think that is what I understand from what I have been reading.
I guess I will just have to take Alcina's advice and just close my eyes and pick or maybe just flip a coin or something. I am starting to drive myself crazy and I know my wife is sick of hearing about it. I told you I was over thinking things. Any advice from the experts out there? Am I being ridiculous? Be honest, you won't hurt my feelings. I'm here to learn.