If money is a concern, with a G10 you can get excellent photos in optimal conditions. Just keep using it and learn the art side of photography (underwater or above). As has been mentioned several times these advanced compacts can really do well. They allow you many of the features that used to set SLRs apart from compacts and are more reasonably priced (especially with underwater accessories). Until you come up against some aspect of a G10 that is really limiting your photos, you don't need a dSLR. There are several users here on SB that show just how far a G10 can be pushed. If you don't need ultra-wide or super-telephoto lenses, near zero shutter lag, or 10 frames a second, the G10 will serve you just fine.
Best way to improve is to just shoot. Go out and find something to take photos of and think about many ways to take photos of the same object. If you're stuck in a rut and can't think of anything to do, look for some photo groups on flickr that do weekly assignments or challenges. Someone picks a topic each week and everyone comes up with their own photos for that topic. It's a great way to practice taking photos and seeing what others think of for the same theme. An example I sometimes do is Flickr: MACRO MONDAYS (please check weekly theme) . This group has a new macro topic each week. I find it forces me to be more creative by coming up with new ways to shoot sometimes mundane items. This then transfers over to my other, more serious, photography endeavors.
If you really want to experiment with a dSLR on land, consider buying a used one that is a few years old. The dSLRs loose their value quickly, so you may find an older one to play with for a very modest price.
Best way to improve is to just shoot. Go out and find something to take photos of and think about many ways to take photos of the same object. If you're stuck in a rut and can't think of anything to do, look for some photo groups on flickr that do weekly assignments or challenges. Someone picks a topic each week and everyone comes up with their own photos for that topic. It's a great way to practice taking photos and seeing what others think of for the same theme. An example I sometimes do is Flickr: MACRO MONDAYS (please check weekly theme) . This group has a new macro topic each week. I find it forces me to be more creative by coming up with new ways to shoot sometimes mundane items. This then transfers over to my other, more serious, photography endeavors.
If you really want to experiment with a dSLR on land, consider buying a used one that is a few years old. The dSLRs loose their value quickly, so you may find an older one to play with for a very modest price.
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