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Thread started 13 May 2014 (Tuesday) 15:59
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Lee .9 ND filter degrade IQ?

 
slickooz
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May 13, 2014 15:59 |  #1

I just got my Lee .9 ND filter from BH. I had a short time to test it out. I shot a few wide open (F/1.2) with filter and without filter. I have a sharp copy of the 85L that only needs +5 MA. When using .9nd filter, photo are a lot softer compared to when there's no filter. I know people say when you put filters on your lens, it will degrade IQ. But I didn't think it would degrade it that much. I found better results when I changed my MA to +20 for a sharp photo with the filter on.

Is this normal? I thought that Lee filters were top of the line filters. After spending 120 on the filter, I'm having regrets. I will post some photos up soon.


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sunny_j
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May 13, 2014 16:04 |  #2

can you post a link to the filter you are using?


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slickooz
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May 13, 2014 16:11 |  #3

http://www.bhphotovide​o.com …lYACg&Q=&is=REG​&A=details (external link)


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slickooz
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May 13, 2014 17:23 |  #4

1st sample
(No Filter)
https://www.flickr.com …@N04/1417718215​1/sizes/o/ (external link)

(.9ND Filter)
https://www.flickr.com …@N04/1418048768​4/sizes/o/ (external link)

2nd sample
(No Filter)
https://www.flickr.com …@N04/1399383130​8/sizes/o/ (external link)

(.9ND Filter)
https://www.flickr.com …@N04/1417783567​2/sizes/o/ (external link)


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Charlie
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May 13, 2014 17:50 |  #5

the first sample is clearly different, images dont even match up. Should have stopped down to avoid DOF issues. focus is off.

second sample is more like it, but DOF is extremely thin, hard to say if it's a focus issue or simply the filter.

It's a filter, so it's bound to have slight IQ degradation. Your sample does seem a bit excessive though. I remember LEE big stopper having no sharpness issues, same with haida, but those are glass rather than resin.


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sunny_j
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May 13, 2014 18:47 |  #6

this is rather interesting, i was thinking about buying this filter too... can you do another test with the lens stopped down to roughly f5.6-f8? thanks!


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slickooz
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May 13, 2014 18:49 |  #7

I'm going do some more testing with a tripod, I will provide more samples later tonight.


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slickooz
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May 13, 2014 20:58 |  #8

Can you guys view the original size files?


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Lyle ­ Krannichfeld
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May 19, 2014 12:41 |  #9

I haven't noticed any quality loss and I often stack multiple Lee's, including that one. LIttle bit of purple tinting, that's about it.


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May 20, 2014 09:09 |  #10

slickooz wrote in post #16902612 (external link)
I'm going do some more testing with a tripod

You handheld those? With a 3-stop difference in shutter speed?


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May 20, 2014 09:19 |  #11

I own the 0.9 and 0.6 in the glass versions. I haven't had any issues.




  
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Lee .9 ND filter degrade IQ?
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