« on: October 14, 2012, 12:03:17 PM »
In general both of these lenses are not suitable for any sort of video shooting other than outside with good light. They aren't particularly good quality either, though the 18-135 is a fine walk-around lens, particularly for stills.
Remember that because you can't slow your shutter speed down while shooting video, you have to have fast lenses to compensate. Even if well lit, f3.5 or slower on an aps-c sensor is not particularly shallow dof and you will end up with a look very close to the hf200 you already have.
You would actually be better off getting the "nifty fifty" 1.8 which is less than $100 as your only lens than any of the choices you've listed, if budget is a concern. If you must have a zoom lens, you are going to need to lay out quite a bit more money than this for good results. I'm not a snob, as is so common in the camera community (both still and video) but it just lays out this way with new lenses. Another great budget choice would be to find some fast vintage primes and get an adapter. I have a 50mm 1.4 m42 lens that I bought for $12 and I use it constantly on professional shoots - I support myself and my family shooting video for a living.