I spent about 30 minutes working on composition and lighting. At first, I used my Nikkor 35mm f/1.8 but realized that the Nikkor 18-55 f/3.5-5.6 would give me more choices. I had to run back to the car and get it.
Computing the exposure values for the use with an ND filter can be complicated. The Hoya NDx400 is a 9 stop — “Big Stopper” — ND filter. It’s nearly impossible to focus once the filter is on the lens. Ed Velez told me about the PhotoPills app. This was my first time using it.
NIKON D5100 @ 35mm , ISO 100 , 15s , ƒ/11
The app helped me easily calculate equivalent exposures with the filter in the available light. For example, without the filter, the exposure for the camera setting for correct exposure was at 1/13s at f/16. With the Hoya filter, the equivalent exposure was 17 seconds at f/16. I couldn’t get 17 seconds on my D5100 I used 15 seconds or 20 seconds.
NOTE: The D5100 is a crop sensor — APS-C — camera. The full frame equivalent of f/16 on APS-C is roughly f/10.33 which is approximately f/11. So I used an aperture of f/11 for these shots.[/fusion_builder_column][/fusion_builder_row][/fusion_builder_container]