Note: Even when using the drop-down lists own values can be entered. Please use the first entry “user defined”!
Attention: Calculated focal lengths below 1.4 mm or beyond 500 mm are declared unrealistic. Extreme values are nevertheless displayed. Please observe that very small working distances below the close-up limit can only be realized using additional close-up rings. In the extremely close range (few cm), the focal lengths cannot be calculated precisely due to simplified approximate computation and unknown dimensions of the lenses. Please use macro-lenses for this purpose!