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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 07 Apr 2008 (Monday) 07:20
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Does Noise Reduction affect sharpness in LOW ISO ??

 
cherrymoon
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Apr 07, 2008 07:20 |  #1

I've just bought a 24-105L. I was terribly sad when I noticed that it was sharpless at any focal length. Shots taken with my old 17-85 IS and they were soooo sharp in comparaison. When displayed at 100%, all details are greatly visible.

Returning to my dealer, a test shot show me a very good sharpness of my lens done on a 40D exposed .

But I'm just thinking that I just switched to ON the ISO Noise Reduction function and allow my 40D to reach 3200 ISO.

Can this function affect low ISO too, making me loss sharpness of my images ???

It is the 1st time I'm hearing of this !

Do you use this function ?

I don't try with other lenses :confused:


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05Xrunner
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Apr 07, 2008 07:23 |  #2

yea noise reduction at high ISO will take away some sharpness and details to give it the nice smoother look


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cherrymoon
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Apr 07, 2008 07:24 |  #3

Ok for high ISO, but for LOW ?


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mrkgoo
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Apr 07, 2008 07:36 |  #4

From the manual:

Reduces the noise generated in the image. Although noise reduction is
applied at all ISO speeds, it is particularly effective at high ISO speeds.
At low ISO speeds, the noise in the shadow areas is further reduced.




  
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05Xrunner
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Apr 07, 2008 07:37 as a reply to  @ cherrymoon's post |  #5

I dont know. I never used any in cam noise reduction. I didnt know that it even applied the NR on low ISO


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Fuji X-T2, Fuji 18-55 2.8-4 OIS, Fuji 35 f2, Fuji 50 f2, Fuji 90 f2, Fuji 55-200 3.5-4.8 OIS
Sony RX100 II

  
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gasrocks
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Apr 07, 2008 08:59 |  #6

Best advice is to not use in camera anything, but to do it yourself with good software in the computer later. Very few would run a low ISO pix through a NOise reduction program, but you could. Yes, all noise reduction programs do so at some expense of sharpness. Not exactly a lens question.


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Does Noise Reduction affect sharpness in LOW ISO ??
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