Unfortunately your grammar is not as good as you think. Your use of still is not as you described. Why? Because to use in the sense you think you used the adverb, you need a comparative, you did not use a comparative. The sense you used the adverb is to mean previously. This is an incorrect usage in this sentence because the poster had not said anything previously.
To your second linguistic point aimed at FieldingMellish, you simply demonstrate poor comprehension. Nowhere did FieldingMellish indicate that he (she) thought "all anybody needs is a camera that can only take pictures under ideal conditions".
Yes I do have an MA in Linguistics, and yes this is my day job!
As for photography, what is "high end" photography? A National Geographic cover? A Magnum photographer? Do they count? When John Stanmeyer's shot, taken with an iPhone, was published on the cover of National Geographic, Stanmeyer put a post on Instagram saying something along the lines of "and let this be the end of the argument". I guess for some it's not.
For further reading here are some of Stanmeyer's thoughts on iPhone and professional (high end?) photography.
http://stanmeyer.com/blog/3032/instagram-its-about-communication/
Then of course there's Michael Christopher Brown who was taken on by Magnum because of his conflict work shot on an iPhone, which is still, I believe, his camera of choice. There are many other photojournalists working with iPhones by choice too, and documentary photographers, and street photographers. This device lends itself very nicely for working in these genres.
Then of course there's the fact that the photographers who enter the Sony Awards are not "average". They are more serious about the art. You seem to forget all of these average people that have DSLR's walking around taking disposable shots of their cats and family in front of landmarks.
If you feel you cannot work with a cell phone, then don't. At least demonstrate you have some knowledge about the work people are doing in the various genres of the art.