FilterCompute

Free

1.3for iPhone

Kenneth Wahl

Developer

Jan 25, 2019

Update Date

Photo & Video

Category

App Store

Age Rating

Apps in this category do not contain restricted content.

Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

FilterCompute Screenshots

iPhone

About FilterCompute

Given an exposure without a filter (fStop, ISO, exposure time) and a filter adjustment factor, this calculator will simplify finding a correct fStop, ISO and, exposure time that will provide a correct exposure with the filter. The calculator completely eliminates the guesswork out of calculating a correct exposure for a filter that is too dark to take a correct through-camera exposure.

The iPhone can be used as a light meter to take an exposure, eliminating the need to manually enter the exposure data.

If a graduated neutral density filter is needed to balance lighting (e.g., between sky and land), the iPhone can be used to find two exposures. The fStop difference is calculated automatically between the two exposures to assist in selecting the best filter to produce the intended image.

Exposure increments can be computed in 1.0, 1/3, or 1/4 fStop intervals. Exposure times can be entered as ratios (1/30), and in seconds (the default), minutes, hours, or days.