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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 03 Jan 2012 (Tuesday) 12:39
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55-250 IS weird problem

 
huangyu84
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Jan 03, 2012 22:04 |  #16

Thanks for all of your inputs and advices, I'll do more field test later.




  
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huangyu84
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Jan 14, 2012 10:34 |  #17

Problem solved. The tested 55-250 IS was defective. I got a replacement and tested the new one out. Below is a 4 hrs exposures of Orion Nebula with the new 55-250 IS@250mm f5.6. Image quality improved a lot.
full frame 30% crop

IMAGE: http://farm8.staticflickr.com/7152/6695434391_2df358eda0_b.jpg

a center 50% crop
IMAGE: http://farm8.staticflickr.com/7034/6695450167_10bb8595dc_b.jpg



  
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Attomsk
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Jan 14, 2012 12:54 |  #18

awesome


My flickr (external link) | 600D gripped | Σ17-50 2.8 OS | 50 1.8 | 70-200L f4 IS

  
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55-250 IS weird problem
FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
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