Longtime Exposure Calculator App for iPhones

[nikonuser]

I'm not really in to iPhones etc but this looks pretty good for those who are and like long exposure captures

http://itunes.apple.com/us/app/longtime-exposure-calculator/id362297743?mt=8

dave

 

[john.e]

Seems pretty useful, will certainly save some time with the trial and error process I usually go through with ND filters. Thanks.