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<blockquote data-quote="Dawg Pics" data-source="post: 540243" data-attributes="member: 26505">...and the delete button.I just take some test shots,&nbsp; look at the image and the histogram, make some adjustments and then try again.&nbsp; I then load them into Photoshop and take a closer look.The ND filter I own is ND8, which will knock down light by 4 stops.&nbsp; Again, you have to put the filter on and take some test shots to see if it is having the effect you want.&nbsp; I also own some cheap graduated color filters.&nbsp; I just now put the gray one on my camera and set the camera to shutter priority and aimed it at at the brightest part of my computer screen. I moved the focus point to the top of the viewfinder where the dark part of the filter was.&nbsp; When metering, the F stop changed from F16 without the filter to F13 with it. The top focus point couldn't reach the darkest part of the filter so I moved the focus point to the center and held the filter in front of the camera placing the darkest part of the filter over the focus point.&nbsp; The F-stop changed to F8. You can also see the F-stop change as you rotate the filter around.In manual mode I centered the meter at F16.&nbsp; After putting the filter on, the meter centered at F11 with the focus point at the darkest part I could place it.This will at least give you an idea of what the filters are doing if you don't already know. Now I know what my gray graduated filter does on my camera.&nbsp; I didn't know before because it isn't marked with any kind of value.&nbsp; How it affects color and contrast is another experiment.</blockquote>

[QUOTE="Dawg Pics, post: 540243, member: 26505"] ...and the delete button. I just take some test shots, look at the image and the histogram, make some adjustments and then try again. I then load them into Photoshop and take a closer look. The ND filter I own is ND8, which will knock down light by 4 stops. Again, you have to put the filter on and take some test shots to see if it is having the effect you want. I also own some cheap graduated color filters. I just now put the gray one on my camera and set the camera to shutter priority and aimed it at at the brightest part of my computer screen. I moved the focus point to the top of the viewfinder where the dark part of the filter was. When metering, the F stop changed from F16 without the filter to F13 with it. The top focus point couldn't reach the darkest part of the filter so I moved the focus point to the center and held the filter in front of the camera placing the darkest part of the filter over the focus point. The F-stop changed to F8. You can also see the F-stop change as you rotate the filter around. In manual mode I centered the meter at F16. After putting the filter on, the meter centered at F11 with the focus point at the darkest part I could place it. This will at least give you an idea of what the filters are doing if you don't already know. Now I know what my gray graduated filter does on my camera. I didn't know before because it isn't marked with any kind of value. How it affects color and contrast is another experiment. [/QUOTE]

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