That 's why a good 2nd hand digital camera is a good investment, easy to find for around 30euros, because everyone buy telephones and tablets to take pictures

WIth a real camera, you'll have compatible Sd card (or any other universal storage card), an OPTICAL zoom (make a HUGE diference for macro pictures), plenty of settings for light conditions, macro distances, color adjustments, and a very good resolution (as I said, mine cost 30euros, and it's 6megapixel...Take a look on my pictures, they are not bad, even if I'm using auto settings and nothing but natural light or my hobby cold lamps).
For hobbyist who like to share his work on forums, blogs, and social networks, a real macro digital camera is as usefull as good brushes...in my humble opinion.