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02/25/2006 11:06:04 PM · #1 |
i just noticed that the images taken with the 28-135mm lens are less sharp and are more pixelated than the 18-55mm lens. does anyone have any idea what the possible reasons are? i took pictures with same aperture and shutter speed and compared them both at 100%. is it because each lens is different and you need different settings to accomplish the same sharpness? even though those settings are the same, they can't be compared in that manner? am i doing something wrong? is it because i have a bad copy of the 28-135mm lens or it is because something is wrong with it? i still have warranty on it... should i have canon take a look at it? not sure if anyone has experience similar issues. any words of advices would be much appreciated! thanks!
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02/25/2006 11:15:38 PM · #2 |
| In general, the wider the range of the zoom, the softer the picture will be. That said, I actually don't have any experience with the 28-135mm lens, so I can't tell you if it has a reputation as a soft lens. |
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02/25/2006 11:20:41 PM · #3 |
| I've used both before. the 18-55 is not very good, the 28-135 is actually a better lens and your shots should look the same if not better with that lens. If you are zoomed in at 100-135 mm remember your shutter speed needs to be faster to combat camera shake, though shouldnt have to be that fast with the IS. I would say most lenses on the market are better than that 18-55 lens though. |
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02/25/2006 11:31:46 PM · #4 |
Generally IS lenses are not as sharp as the non-IS equivalent. Extra parts in there and all.
Next, at what aperture and focal length? Lenses are at their sharpest at 5.6-7 or so in the F stop range. getting to either extreme will show some softness or other issues (distortion, vignetteing, etc)
Did you use a tripod or other method to verify you have absolutely no camera shake? I often want to blame the lens/camera when it is me, jsut abit of camera shake can/will shot up as a soft pic.
Are you pixel peeping? Shame shame.
Take the image form the camera and do a USM on it - 300%, .3, 0. that will make a big difference on the sharpness of image, particularly if you have incamera sharpengin turned off.
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02/26/2006 12:17:00 AM · #5 |
The 28-135 IS works great for me, especially when stopped down. Take a look at what people produce with that lens.
Message edited by author 2006-02-26 00:17:32. |
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02/26/2006 12:37:42 AM · #6 |
Originally posted by petrakka:
I've used both before. the 18-55 is not very good.... |
I assume the 18-55mm being referred to is the Canon EF-S 18-55mm f/3.5-5.6 "kit" lens?
Not very good ?
Though it may not have the Red band on it to denote it as an "L" series, I for one, and many others here too, very much disagree with that statement, and, well, take a look for yourself at what kind of images on this site have been taken with that "kit" lens, otherwise from this day forward I shall call "The little lens that could":
10 Blue Ribbons, 1 Red and 1 Yellow Ribbon , with a range of scores between 7.175 and 7.888.
Very under-rated piece of glass in my opinion.
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02/26/2006 12:49:01 AM · #7 |
| canon 18-55 Kit lens took 2nd place Texas State Fair in 2005 for City and Lanscape photos. I find it is a good sharp lens. BUT ... since buying a few more expensive lenses I seem to have put it away, probably not smart move, it does have it's place. I like much better than the Canon 75-300 that I find too soft for my liking. |
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