Just for fun, three different versions of the same shot taken with my Pen E-P3...
The first uses one of my favorites among the built-in Olympus jpeg 'Art Filters' - in this case, the PinHole filter - which seems to give this image the kind of brooding pre-Halloween darkness it deserves--
The second began with the RAW version, processed lightly in Nik's Color Efex for enhanced contrast, and then with an old Lightroom plug-in by X-Equals (Xel) that mimics an old Kodachrome with an interesting warmish tint--
The third and last was processed in Nik's Silver Efex--
Taken with the ridiculously inexpensive Pergear 25mm manual focus lens, at f/4.
A century or two ago, I bought the tiny 9mm Olympus 'body cap' fisheye lens - an inexpensive and ridiculously thin/tiny little piece of glass which has a fixed aperture (f/8) and a tiny plastic lever giving 3 choices of focus - infinity (for distant landscapes) - close up (less than .2 meter) - and a third choice for everything else. For this picture I used the 'for everything else' setting, as well as the E-P3's in camera PinHole 'art filter' setting. And---
And while this tiny little bit of plastic is not truly the equal of some of the much, much pricier fisheyes I've owned and used - it's surprising me with its image quality...
I haven't used my recently acquired Lumix 45-175 zoom that much - but every time I do, it makes me want to use it more.
This was taken at the extreme telephoto (175mm) end of the zoom, in bright morning light--