The Canon Thread
Nov 12, 2009 at 6:37 PM Post #1,771 of 2,718
USM just mean Ultra Sonic Motor. It has nothing to do compatibility with the body. If the lens fits on the body, it will work.
Nov 15, 2009 at 10:39 PM Post #1,772 of 2,718

I was bored on saturday and wanted to make a mess. I adore the 7d + 50 1.8 combo
Nov 15, 2009 at 10:46 PM Post #1,773 of 2,718

Originally Posted by lan /img/forum/go_quote.gif
USM just mean Ultra Sonic Motor. It has nothing to do compatibility with the body. If the lens fits on the body, it will work.

I did some homework. It appears Canon does not put a motor in the body, every lens has it's own autofocus motor.
Nov 16, 2009 at 2:18 AM Post #1,774 of 2,718

Originally Posted by LeonWho /img/forum/go_quote.gif

I need a lens recommendation.

Tamron 17-50mm F2.8. Look on ebay, you might find one that fits your budget. Very sharp @ F2.8, good PQ in terms of both color and contrast, usable zoom range, relatively light weight but still feels solid ... however, auto focus is bit slow and loud comparing to Canon USM lens.
Nov 23, 2009 at 3:28 AM Post #1,776 of 2,718
I love Publix. I wish I had one here.

Which lens did you use? 7D could really use the 17-55 2.8 or 24-105 for the IS.
Nov 23, 2009 at 4:40 AM Post #1,777 of 2,718
whole thing shot with my bread and butter 50mm 1.8. I was so worried about the dof when I went back to a crop body but I have fallen in love with the 80mm equv focal length
Nov 23, 2009 at 1:21 PM Post #1,778 of 2,718
Shooting with non IS handheld is too jerky for my tastes. If you're serious about taking some video, IS is really important IMO. The 50 1.8's bokeh is also not too great. Another thing I don't like about it is the manual focusing. It doesn't feel good and it's not full time manual since it's not a USM lens. So those are other things to consider.

How was editing and what spec computer did you use? I had to upgrade to core i7 and 64bit windows and 64bit editing to work well with my 5D2 files.
Nov 23, 2009 at 4:54 PM Post #1,779 of 2,718
I am planning to build a steadicam/rig over winter break. Manual focusing the the 50 1.8 isn't too bad. Editing was pretty easy because I have my oc'd q6600 (3.6ghz w/ 8gigs of ram) rig, which I will make into a hackintosh over winter break for final cut. I have been 64bit for awhile
Nov 27, 2009 at 3:34 AM Post #1,781 of 2,718
Great pic in this thread.

Beyonce with Canon 50D and 100/2.8 Macro. ISO..umm 500 I think, 1/80 f2.8 or close to that. Image is cropped a little.

Nov 27, 2009 at 3:43 AM Post #1,783 of 2,718

Originally Posted by plaidplatypus /img/forum/go_quote.gif
What EOS bodies work with USM?

Any Canon lens with USM will work on any Canon EOS camera body.
Dec 3, 2009 at 12:33 AM Post #1,785 of 2,718
Hey guys, I have a canon 500d, and am looking for a new lens to accompany my kit lens and 50mm 1.8. i kind of want to use it in mostly natural lighting and outside, so i'm looking for something that can perform well in that aspect. i also want to use it for video as well so while i have been looking at the 24-85mm or 28-105mm, i'm apprehensive on how it will perform without IS. any suggestions?

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