DoFC Exp Calc 1.0.1

DoFC Exp Calc 1.0.1 is described as a professionally-designed as well as impressive tool which can quickly calculate the near and far distances of acceptable focus.

Just select the distance you are focused at, the f/stop and the len's focal length and the diagram shows you at what distance acceptable focus starts and at what distance it ends. You can select to express the focus distance in metres, millimetres, feet and inches. Unlike other Apps this App does not use picker wheels for the f/stop and focal length values so you can enter whatever values you want.

It is important to select the maker and model of camera you are using otherwise the calculations are not likely to be correct. If you camera is not listed then email me and I will add it to the next release.

The other main problem this App handles is what shutter speed will be required given the lighting conditions, the f/stop used and the iso rating of the film. Once again it can all be hand calculated and looked up on lighting tables that are available but this is not easy and the tables do not have all values listed that are possible. 

The Exposure Tab takes the f/stop and iso rating and in combination with the your assessment of the lighting conditions provides both an exact answer but also the generalised table for the settings and conditions. 

The exact answer can be the same as the answer in the table but can also be somewhere between one answer and the next. This is because the standard tables do not list every f/stop that is possible nor is the effect of the iso rating always easy to work out.

The answer given is very precise and you may find you cannot set your camera to this value. This is not a problem because the whole assessment of the lighting conditions is very subjective. The answers given are meant to be a guide. You may wish to take a number of shots around the shutter speed given.

Enhancements:

• Reduced the size of the window to fit on smaller screen sizes.

Requirements: 

• Mac OS X 10.6 or later