Photograph: Slawek kozdras
Photograph: Steve Smith
Natalie Mayer, judge: This is a nicely observed scene - a plant triumphing in apparent environmental adversity. It might have added interest if the photographer had widened the aperture to dramatically decrease the depth of field - F2.8 or below, with the focus held on the greenery, would really have given this shot added pop. Sometimes, having the whole photo in focus can make it look a bit snap-shot like. Narrowing the range of focus draws the viewer's eye to the important elements of the shot and helps us quickly make sense of the photographer's vision Photograph: Graeme Fordham
Natalie Mayer, judge: This image is technically perfect, and takes advantage of a nice wide aperture, as mentioned in the previous comment. It's beautifully sharp, with the focus precisely in the right place - doesn't your eye just go to exactly the right area of the photograph as soon as you look at it? That is the benefit of using depth of field cleverly. Obviously this one also has the 'pop' of great colour contrast on its side too. An excellent runner up, thank you! Photograph: Nicholas Lam
Natalie Mayer, judge: This is a really nicely balanced composition, and it certainly takes in the theme of green, so for me it is the outstanding winner this month. The photographer has included just enough to make the shot interesting to look at - if that fella hadn't been at the front, providing us with some detail, or if any distracting elements had been included around the edges, then the composition wouldn't have worked nearly so well. Well done! Photograph: Jason Pemberton