Originally Posted by
John 2
Came across this article this morning and thought it might be useful to post a link. Even more interesting was a comment at the end of the article which I have posted in full for those who don't want to plough through the whole article.
"Mark Stanley-Adams • a month ago
Here's a tip for those who might find the cost of ND filters too high. You can simulate the ND filter effect using image stacking in Adobe Photoshop ®. Correctly combining, for example, 30x 1 second exposures produces precisely the same effect as 1x 30 second exposure. Not only can you capture images in bright light without the filter, but it's also possible to shoot hand-held if your shutter is fast enough. Two things to bear in mind if you do shoot hand-held; firstly, you'd want to keep your shutter speed relatively slow to avoid having to take take enormous numbers of images. Shooting at 1/500 sec would require 500 images just to simulate a 1 second exposure - not very practical, I'm sure you'll agree. And secondly, you'd need to remember to align the layers when stacking them."