What happened?
Jun 25, 2014 17:49:59 #
I use a 14stop ND and a 8stop ND for some of my landscapes. I use a ND calcuator on my smart phone to give myself a rough idea of where I should be, setting wise to guesstimate.
http://cdn1.alexwisephotography.net/blog/wp-content/uploads/2009/07/BKS_ND_Chart.pdf
Example. I know I want 10second exposure. Its gonna be a bright day. With a 14stop ND, and bare meter reading tells me at f11 I would be at 1/1000 then i know that my 14stop filter will turn that to about 15seconds.
http://cdn1.alexwisephotography.net/blog/wp-content/uploads/2009/07/BKS_ND_Chart.pdf
Example. I know I want 10second exposure. Its gonna be a bright day. With a 14stop ND, and bare meter reading tells me at f11 I would be at 1/1000 then i know that my 14stop filter will turn that to about 15seconds.
Jun 25, 2014 19:20:44 #
Looks to me like you did not shoot on a tripod. When you use ND filters, you need to always use a tri-pod. Better, you should use a tripod and a remote shutter. The purpose of using ND filters is to slow down you shutter speed.
Jun 26, 2014 08:57:52 #
Water can create all kinds of color and a CP will help control any flares and reflections. I very rarely use ND's without a CP.
Jun 26, 2014 09:10:40 #
Legendmn
Loc: Minneapolis, MN
BTW, the yellow in the water is normal depending on the minerals in the water. The colors can vary from brown, yellow and red depending on the soil composition and the levels of mud and silt in the water.
Jun 26, 2014 09:49:12 #
cat2560 wrote:
This was taken with a Hoya NDX400 neutral density
the sun had just come out from behind the clouds..what caused the purple on the right side of the photo? How can I avoid this in the future? Thanks..
Just for general information going forward, there are very few images that can't be improved by using a lens hood appropriate for the lens you're using. Without going into such gobbledygook as talking about physics, extraneous light coming from the side robs an image of color and contrast and without a lens hood, in daylight, light comes into a high percentage of scenes from the side.
Jun 26, 2014 10:59:47 #
cat2560 wrote:
This was taken with a Hoya NDX400 neutral density
the sun had just come out from behind the clouds..what caused the purple on the right side of the photo? How can I avoid this in the future? Thanks..
Next time use your lens hood.
Jun 26, 2014 11:21:22 #
Thank you everyone! So much can be learned from this site, I will take everything here into account next time.. :)
Jun 26, 2014 12:00:41 #
Cheap nd filter? I have an adjustable
that does weird colors at high settings.
that does weird colors at high settings.
Jun 27, 2014 08:38:24 #
Jun 27, 2014 16:05:35 #
If you are taking the shot with the light source behind you, a timed exposure will leak light into the eye viewer. It usually won't show up on a regular shot, but it has a lot of time to roam around in there during day shots. Most time shots are done a night and there it is not a problem.....Most cameras supply a black rubber eye viewer cover on their straps. Some people just drape their straps across the viewer.
Jun 27, 2014 21:33:10 #
The purple color is definitely a light leak most likely from the viewfinder. Always cover the viewfinder for long exposures and use live view for focusing if necessary. The one saving grace is the picture converts nicely to B&W and with a few simple contrast adjustments and you've got a pretty good image.
Jun 29, 2014 18:26:20 #
cat2560 wrote:
This was taken with a Hoya NDX400 neutral density
the sun had just come out from behind the clouds..what caused the purple on the right side of the photo? How can I avoid this in the future? Thanks..
Sun flare made pink by the coatings either inside your lens or between the front of your lens and the Hoya filter. I have a Panasonic 7-14mm ultra wide angle that does that with no filters on it when I have an excessively bright window in a dark room. Obvious pink/pale purple patches appear and I have to Photoshop them out to save the shot or pitch it. Mine typically happen more when I'm on about a 45 degree angle from the bright window. In your case that would be a 45 degree angle from the sun. I've learned to look more carefully for the pink/purple flare on the viewfinder while shooting to eliminate most of it now. Sometimes I can use RAW processing to take out a purple tint if the problem isn't too obvious and large.
Jun 29, 2014 18:28:20 #
tfoust wrote:
The purple color is definitely a light leak most likely from the viewfinder. Always cover the viewfinder for long exposures and use live view for focusing if necessary. The one saving grace is the picture converts nicely to B&W and with a few simple contrast adjustments and you've got a pretty good image.
Unfortunately I also get this from time to time and I don't have any viewfinder on my Olympus and it's not the lens leaking around the mount. So there are other ways it can happen like lens flare.
Jun 30, 2014 10:37:28 #
Thank You again to everyone who responded to this post
I really appreciate all the different possible explanations and the time taken to post them! :)
Jul 2, 2014 05:13:40 #
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