2016-11-03 08:48:57 -0600 | asked a question | How to process 2 photos with a 2 focal length from the same smartphone? Hello All, I am using a smartphone whose focal_length is 3.85mm and i use analog_exif to retrieve the exif info. I took one photo (A) and i see the "Focal Length in 35mm" is 35mm. I took another photo(B) of the same object but this time i "zoomed" it. The "Focal length in 35mm" is then 108mm. As the zoom is only a digital magnification i want to reduce the size of the photo B by a factor 108/35. Then for calculations i will only use one focal length: 35mm. Is my My reasoning correct? Thank you for you help Alvaro |