WDWFigment
Well-Known Member
I work in IT and there is more to a size of a picture than just judging on the mega-pixels. For one the sensor of the camera plays a part in the photo quality of a image.
So a p and s sensor that is smaller than a DSLR will not have the same quality as a DSLR. So sensor plays a part in how big you make an image. Next the PPI (Pixels per inch) factors in for example at 150 PPI an image will have the pixels VERY visible and the detail will be fuzzy. Now most cameras do run at 200 ppi minimum however, at that ppi you would need over 16 mega-pixel in order to print a 20 by 24.
Now moving past mega-pixels there is noise since the person asked about fireworks noise plays a BIG part in this since you need slow shutter speeds to get these shots if not at a bulb setting.
I've only heard of a "few" p and s having a "limited" bulb setting since I've been dealing with cameras. As for the firework setting I'm sure you would agree judging by your amazing firework shots that the firework settings is not what you want to be shooting in.
That is just a small part of what goes into a shot but it's not just the mega-pixels that make it to where you can blow up a shot to 20 by 24. Here are some links to show a bit more detail:
http://www.design215.com/toolbox/megapixels.php
http://www.pcworld.com/article/128982/determining_your_cameras_largest_print_size.html
I think it's important to know your audience when providing information. This information certainly makes sense to you and I, but I question how helpful it is to the original poster?
I understand the distinctions between an APS-C sensor, full frame sensor, etc., and how each affect an image, but to part-and-parcel indicate you'll want a DSLR for 20x24 or larger images (as was done prior to my post) is wholly incorrect. I merely said, with regard to printing larger sizes, that's where MP will matter (I didn't say that they're solely what matters).
There is absolutely nothing wrong with using the "fireworks mode" on the camera. Sure, it's better to have some sort of a manual mode, but you have to start somewhere. My bet is that if someone is coming to a Disney board asking "what camera" questions (absolutely no offense to the OP), they're just looking to get their foot in the door to get a decent camera that will help enable them to take vacation pictures. They're likely not "at the point" where bulb mode and other more advanced features are all that relevant, so why even go there?