While I admit ,I really don't use my 17-85 a great deal, I do find it can be a pretty useful lens at times, I mostly find I grab it out when i may need to quickly adjust zoom for fast moving objects, ive found mine reasonably sharp, and certainly capable of some great images.
Perhaps you can take a couple of basic shots using the 17-85mm lens, post here and we may be able to see if we have any pointers or we may even see if there is a problem with your lens ?
Are you looking at a Macro 50mm or a fixed 50mm ?
I also have a "fixed" 50mm, again, don't use it heaps, but in low light, family portrait shots, or when you just want
"Bokeh" (basically where the subject is sharp but the background is blurred) its a great lens, but not so great for Macro, plus no zoom may have you walking lots to compose your shots (lol)
If your going for the Macro 50mm lens, then disregard the above
Again, are you talking about using the lens for Macro Photography here Kev ?
Hi menace, very true about the flash, while flash can be a extremely valuable tool, if you get it wrong, you will call it the devil

(lol), I also pretty much avoid it when ever I can, but sometimes it can really make a pic, others it can ruin.
As for your pics, (IMO) the first one is a little blurred, I would suggest everyone always try and use a tripod when shooting sunsets, this should remove any shake, plus your camera should also have a built in shutter release timer, this will allow you to press the shutter button, and the camera will have a few seconds to settle any movement you add by pressing the button, before snapping the pic for you.
Personally, Id have liked to have seen it without the foreground items (trees roof etc), I think "just" those awesome islands on the horizon, and the rest of the seascape, with those colours you captured, may have made for a very beautiful pic !
The second one im unsure about, I like the sun/person thing you have going on , I do suspect I would like it more if a little of the foreground (road, grass) was cropped off the bottom, perhaps id have tried a slightly faster shutter speed, this may have seen richer colours from the sky, and made the foreground/person darker, and so more of a silhouette adding to the effect ?
The third pic has nice a nice tone and texture, but the whole pic seems a bit tight, I think id like to see things wider/further back, to show the setting, and so give more of a "feel" to the place, id like to see more of the effect the light is having on the surroundings chair/floor etc.
The fourth one is just awesome dude !, I like pretty much like everything about it , id be interested to see what it looked like if you could also see the boat, but not sure if it would be better or worse really, great job IMO
