.. Now that I've got your attention, just a quikkie :
Why is it that when I redevelop my film, ,the quality of the photo I get back is not as good as the original one when I first develope it. It will be either too dark or too bright. It happens even when I go back to the same shop.
the prints you take from your snaps is diffrent from the photos you take is because of the filter effect. Try to use filters , diffusers to keep away bright light. Also there is a possibility of poor printers , cartiridges or it varies from printer to printer.
You may also want to shoot slide film or buy a digital camera.
[ Edit: sorry, no website promotion in the forum please ]
sometimes even when you bring it back to the same shop it will be different depending on the quality of the printer and on what settings it has. If you go back to the same shop bringing a copy of the original picture many shops will try to match the colour for you. I know my local shop prints the machines settings on the back of all prints so that when they need to match a colour print they have access to the information if you have the original print.. I'm not sure if this helps but good luck ..