It’s not so much the pixel count per say but the format and dementional size of the saved product. The higher the pixel, or dpi(dots per inch), the less grain the picture will have when printed. But that’s not the only thing that effects the grain. eg; my Minolta C-700 is a 2.3meg. Its saved pic size is 17x23". You open the pic on what ever photo software you have like Photoshop, then resize it to the final print format you want, like 5x7. Now when the resample tab on the image box is unselected in Photoshop the dpi goes from 72 to about 175 when resizing to 5x7. You get what looks like about a 200ASA negative type film print in grain quality. If you printed a 17x23 72 dpi pic right off the camera it would look like sand paper. All the resample does is compress the image like holding a bunch of soda straws with both hands, squeeze and the bunch gets tighter. With the camera, the higher the pixel count of the initial pic the higher it will be on the resample and the finer the grain, in laymans terms.
I have a scanner for print film negatives and slides; it SCANS initially at 2300dpi. Use a 50ASA slide like Kodachrome and scan that, use the Epson printer I have and resample DOWN to 600dpi, the prints look like they were painted, no grain. To get close to that fine a print you would need one of those 6 meg+ pro cameras. The printer I got for just that is an ink jet, dots at .001" and archival ink that lasts 100 years. I fooled a pro photographer at one of my shows, she wanted to know what chemicals and paper I used. No chems, dear, off a computer printer!
It all comes to how big a print you want. The bigger the print the larger the pixel memory you need to get a clean piece. Now if you just want one for e-mail or the web, great, all you need is a 72dpi pic of any size to upload, they all look the same. Resize from 17x23 to 7x9 at 72dpi and BAM!, you’re done. The pics on Rocket’s journal are digital. It’s all in the retouch and the quality of the lens on the camera. Popular Photography and sites like Bizrate.com have ratings for cameras from buyers that will give you and idea of the cost to value ratio. $150 gets a nice camera now-a-days. Look at the lens, features-auto flash, or a remote for self portraites on trail?, weight etc, water resistant?. Memory cards are a problem, they come with not much and upgrade cards to 200mb + are around $100. You’ll get a dozen pics on the card with camera in whatever mode, a high end card will get you 200 pics. Also there are different types of memory cards. I have a Smart Card and a reader for it that looks like a 3" floppy. Add the soft ware and load right to Photoshop. Some have USB ports but they can be weird. Rockets swaps out his card for another in mail drops and his dad does the loading.
Bushwhack