Feb 01, 2013 01:29 | #16 Sowsun, thanks for the input. Just as you described it, i stumbled upon a youtube clip last night showing the zooming mechanism (very new to me) never seen this before. "High life on low budget"
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msowsun "approx 8mm"  More info | Feb 01, 2013 07:29 | #17 bent toe wrote in post #15558887  Sowsun, thanks for the input. Just as you described it, i stumbled upon a youtube clip last night showing the zooming mechanism (very new to me) never seen this before. I believe that 28 and 80 are the only mm where the lens is at it's most extended. Is this the video? https://www.youtube.com/watch?v=vsof4jhsD4c Mike Sowsun / SL1 / 80D / EF-S 24mm STM / EF-S 10-18mm STM / EF-S 18-55mm STM / EF-S 15-85mm USM / EF-S 55-250mm STM / 5D3 / Samyang 14mm 2.8 / EF 40mm 2.8 STM / EF 50mm 1.4 USM / EF 100mm 2.0 USM / EF 100mm 2.8 USM Macro / EF 24-105mm IS / EF 70-200mm 2.8L IS Mk II / EF 100-400 II / EF 1.4x II
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Feb 01, 2013 07:48 | #18 msowsun wrote in post #15559405 Is this the video? https://www.youtube.com/watch?v=vsof4jhsD4c It is pretty clear that the front element does not rotate as you zoom. It also has internal, rear Auto Focus, so I am quite certain that nothing changes when you AF. Yepp, thats the one. "High life on low budget"
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msowsun "approx 8mm" More info | Feb 01, 2013 08:42 | #19 The ef 28-80mm 3.5-4.5 USM is a good lens and is very similar in build and Image Quality to:  The EF 28-80mm 3.5-5.6 is the only Ring Type USM lens I know that does this. It really isn't a problem at all if you put a filter extension on it. I also had an EF 28-70mm 3.5-4.5 II that did they same thing. Many other lenses (eg. EF-S 18-55) also extend when you zoom, (and they also rotate when focused) but the front part does not retract into the front. Here is a little more info: http://photo.net …gital-camera-forum/006jVR Mike Sowsun / SL1 / 80D / EF-S 24mm STM / EF-S 10-18mm STM / EF-S 18-55mm STM / EF-S 15-85mm USM / EF-S 55-250mm STM / 5D3 / Samyang 14mm 2.8 / EF 40mm 2.8 STM / EF 50mm 1.4 USM / EF 100mm 2.0 USM / EF 100mm 2.8 USM Macro / EF 24-105mm IS / EF 70-200mm 2.8L IS Mk II / EF 100-400 II / EF 1.4x II
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Feb 01, 2013 10:23 | #20 msowsun wrote in post #15559610 The ef 28-80mm 3.5-4.5 USM is a good lens and is very similar in build and Image Quality to: 24-85 USM 28-105 USM 35-135 USM 28-135 USM IS 70-210 USM I found this link, and it says the that the front element DOES rotate and also extends slightly when focused: http://forums.dpreview.com/forums/thread/633891 Now that I think about it, I do remember that the back of the lens was sealed unlike most other lenses in this class. The EF 28-80mm 3.5-5.6 is the only Ring Type USM lens I know that does this. It really isn't a problem at all if you put a filter extension on it. I also had an EF 28-70mm 3.5-4.5 II that did they same thing. Many other lenses (eg. EF-S 18-55) also extend when you zoom, (and they also rotate when focused) but the front part does not retract into the front. Here is a little more info: http://photo.net …gital-camera-forum/006jVR What do you mean sealed? As in dust/water proof in the back by the metal mount? "High life on low budget"
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msowsun "approx 8mm" More info | Feb 01, 2013 10:37 | #21 bent toe wrote in post #15559978 What do you mean sealed? As in dust/water proof in the back by the metal mount? Most consumer zoom lenses have an opening at the back where dust and other crap can enter. This 28-80 has a rear glass element that seals the rear of the lens completely.  Mike Sowsun / SL1 / 80D / EF-S 24mm STM / EF-S 10-18mm STM / EF-S 18-55mm STM / EF-S 15-85mm USM / EF-S 55-250mm STM / 5D3 / Samyang 14mm 2.8 / EF 40mm 2.8 STM / EF 50mm 1.4 USM / EF 100mm 2.0 USM / EF 100mm 2.8 USM Macro / EF 24-105mm IS / EF 70-200mm 2.8L IS Mk II / EF 100-400 II / EF 1.4x II
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Feb 01, 2013 11:54 | #22 Nice.  Anyway, here are my first impressions of the 28-80 USM (original version). I got it used, although it was in mint condition you could see the rubber has worn off a bit (whiteness in the rubber)and the innertube wasent the most sturdy one. Absolutly not loose or wobbly.. but at 30mm it sinks in to 28mm by it self. The feel is great, same size as the 85mm. Good feel of the zoom and focus rings. As always, very fast in focus thanks to the USM. The "in-tube" movement is kinda awkward and new to me, and i havent figured out if i like it or hate it. I guess Canon engineers thought it was a good thing.. time will tell. I snapped a few shots in low light conditions, sharpness seems good at wide open and at 3.5 I'm gonna test it more this weekend in bright outdoor conditions. Overall it seems as good as my 50/85 in buildquality and AF speed. Have to look for the sweetspot and do some closeup to see the sharpness in my images. Will post some photos at the end of the weekend. Edit* Just took a few photos on 3.5 28mm, 4.5 50mm and 5.6 80mm, uploading now. "High life on low budget"
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Feb 01, 2013 14:08 | #23 This are all shot indoor under artificial light. "High life on low budget"
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msowsun "approx 8mm" More info | Feb 01, 2013 14:13 | #24 Yes, that looks pretty good, especially since it's wide open. Mike Sowsun / SL1 / 80D / EF-S 24mm STM / EF-S 10-18mm STM / EF-S 18-55mm STM / EF-S 15-85mm USM / EF-S 55-250mm STM / 5D3 / Samyang 14mm 2.8 / EF 40mm 2.8 STM / EF 50mm 1.4 USM / EF 100mm 2.0 USM / EF 100mm 2.8 USM Macro / EF 24-105mm IS / EF 70-200mm 2.8L IS Mk II / EF 100-400 II / EF 1.4x II
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Feb 01, 2013 14:16 | #25 msowsun wrote in post #15560940 Yes, that looks pretty good, especially since it's wide open. Yea, but the CA/purple fringe scares me.. it's not even that big of a contrast.. wonder what it looks like photographing a tree against a blue sky. "High life on low budget"
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msowsun "approx 8mm" More info | Feb 01, 2013 14:20 | #26 Try shooting the same scene with your 85mm 1.8 wide open and I think you will see that it is not so bad . Mike Sowsun / SL1 / 80D / EF-S 24mm STM / EF-S 10-18mm STM / EF-S 18-55mm STM / EF-S 15-85mm USM / EF-S 55-250mm STM / 5D3 / Samyang 14mm 2.8 / EF 40mm 2.8 STM / EF 50mm 1.4 USM / EF 100mm 2.0 USM / EF 100mm 2.8 USM Macro / EF 24-105mm IS / EF 70-200mm 2.8L IS Mk II / EF 100-400 II / EF 1.4x II
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Feb 01, 2013 14:37 | #27 msowsun wrote in post #15560970 Try shooting the same scene with your 85mm 1.8 wide open and I think you will see that it is not so bad . Hmm, on Sunday i will do some fieldtesting. "High life on low budget"
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