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ND Filter
Mar 8, 2013 16:31:10 #
Is it possible the use of an ND4 filter caused me to get OOF pics? Aperture was set at 1/100 and 1/125. Conditions were sunny mid-day. f/6, 1/100, ISO 800
Mar 8, 2013 16:42:48 #
lighthouse
Loc: No Fixed Abode
Yes, a poor filter could definitely cause soft shots.
Light striking the front glass could also cause the lack of contrast.
But from the look of that shot I would more suspect movement blur as the culprit.
Why did you have a ND filter on?
Is this a crop or the full image?
Light striking the front glass could also cause the lack of contrast.
But from the look of that shot I would more suspect movement blur as the culprit.
Why did you have a ND filter on?
Is this a crop or the full image?
Mar 8, 2013 16:45:22 #
I used a Canon 70-300mm lens with IS @300mm on my 7D. I used the filter because it was very sunny. Alot of my shots came out like this. What did I do wrong. I lost some good RAW shots because of this problem.
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Mar 8, 2013 16:52:10 #
gemlenz wrote:
I used a Canon 70-300mm lens with IS @300mm on my 7D. I used the filter because it was very sunny. Alot of my shots came out like this. What did I do wrong. I lost some good RAW shots because of this problem.
Think maybe you meant to use a polarizing filter?!
That will learn ya !
Mar 8, 2013 16:53:00 #
Mar 8, 2013 16:59:15 #
gemlenz wrote:
I had a PF on there.
OK then, what else were you making that poor lens wear?
No big deal, looks like a young lion, you will have time to shoot him again maybe.
:wink:
Mar 8, 2013 17:08:50 #
FredB
Loc: A little below the Mason-Dixon line.
gemlenz wrote:
Is it possible the use of an ND4 filter caused me to get OOF pics? Aperture was set at 1/100 and 1/125. Conditions were sunny mid-day. f/6, 1/100, ISO 800
1) why on earth were you at ISO 800 if it was mid-day and sunny?
2) there seems to be not a lot of contrast in the frame. Did you focus BEFORE or AFTER fitting the filter?
3) Did you have BOTH filters on?
Depending on the situation, I'll often pre-focus with NO filters on, then shift to MF to keep it from changing, and then load my filter, and on very rare occasions, FILTERS.
I have a feeling your camera had trouble focusing through a CPL, an ND4 and a dim scene to boot.
I can not see anything about this scene that called out for the use of either an ND filter or a CPL.
Mar 8, 2013 17:30:24 #
lighthouse
Loc: No Fixed Abode
gemlenz wrote:
Is it possible the use of an ND4 filter caused me to get OOF pics? Aperture was set at 1/100 and 1/125. Conditions were sunny mid-day. f/6, 1/100, ISO 800
George, are you OK? Seriously, are you OK?
You are a better photog than this.
You know more than this.
7D with 300mm on makes the equivalent of 480mm and you are shooting it at 1/100th sec at ISO 800 and you have a ND filter on because its a bright day??????
I'll be honest.
That's just a weird thing to do.
Now that I know you had 480mm at 1/100 th of a second, I am even more sure its motion blur and think you did a darn good job to keep it as sharp as you did.
All the ND filter did was cost you 2 F/stops and probably some contrast and saturation as well.
There are only 3 reasons that i can think of to use a ND,
to get more motion blur - which doesn't apply here.
when there is too much light for the camera - that also doesn't apply as there is still plenty of scope to change the camera settings,
and finally to enable you to use a shallower DOF without changing your shutter and ISO - that also doesn't apply as you actually have 3 f/stops of more attractive ISO available.
I repeat George - are you feeling OK?
Mar 8, 2013 17:31:11 #
As noted before, much motion blurring and a lack of contrast. The blue haze in the lower half was probably due to the polarizing (was it a circular filter?) or reflections between the two filters.
Why in the world would you use these two filters on this shot when neither one is needed?
Without your permission, I tried to improve it but cannot help the motion blur.
Why in the world would you use these two filters on this shot when neither one is needed?
Without your permission, I tried to improve it but cannot help the motion blur.
Mar 8, 2013 19:23:15 #
I always have my UV filters on to protect my lenses, with the exception of my 50mm. I've used this 300mm lens before w/o the ND filter with no blur problems. My SS was probably the issue here. I had the ISO cranked up because the scene was too dark (caused by the ND filter). I tried to improve this one too with similar results. This is a lost cause. I'll have to try this again.
Mar 8, 2013 19:31:21 #
lighthouse
Loc: No Fixed Abode
gemlenz wrote:
I always have my UV filters on to protect my lenses, with the exception of my 50mm. I've used this 300mm lens before w/o the ND filter with no blur problems. My SS was probably the issue here. I had the ISO cranked up because the scene was too dark (caused by the ND filter). I tried to improve this one too with similar results. This is a lost cause. I'll have to try this again.
George,
I am confused now, are we talking UV filter or ND filter?
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Mar 8, 2013 19:53:58 #
Mar 8, 2013 20:15:35 #
lighthouse
Loc: No Fixed Abode
I just think you had a bit of a brain fade George.
Happens to all of us from time to time.
If I read you correctly - you on a UV, an ND and a polariser.
I don't agree with the others that the polariser was unnecessary.
But see no reason that the UV and the ND were on there.
That would only cause problems for no benefit.
Happens to all of us from time to time.
If I read you correctly - you on a UV, an ND and a polariser.
I don't agree with the others that the polariser was unnecessary.
But see no reason that the UV and the ND were on there.
That would only cause problems for no benefit.
Mar 9, 2013 00:32:45 #
Mar 9, 2013 01:35:03 #
lighthouse
Loc: No Fixed Abode
gemlenz wrote:
so you don't see any benefit of the UV filter?
No, not if you are using a polariser as well.
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