pictures 2,3,5 are under t5's in my main tank and the rest are under my leds. it is very hard for me to take them under my leds because i only have a 3 light system (2 blue 1 white) and any frag that shadows the white there is just a spot of blue that makes the photo look like complete crap. that is the issue i see with LEDS, since they do not create ambiant light like t5's and MH's if there is anything in the way of a certain LED all others will shine in that shadow and black out some of the light so you could end up with just blue and just white spots all over the tank.
i have overcome this by adding a HOB filter on the tank to throw a ripple in the water suface to make a shimmering effect, it makes the tank look cool and it helps stir the LED light up so it is not so noticeable.
i thought the same way you did though about my tank and finally i sucked it up and sold a bunch of frags and was able to get enough money to get me a camera to take some tank pictures, so far the only plans for this camera is to take pictures of my tank. it has a short macro lens that is only good up to 5ft on it so it is hard to get a normal person in focus on this camera until i get a new lens at least. i suggest you buy one! buy a nice used one first but do some research on it before you buy, then as you learn and get used to all the setting you can eventually get a really nice one. i am just using this as a learner one and i know eventually sometime down the road i will buy another, i just want to know everything about these cameras before i take that step.