camera with no exif-data

[thomas83]

is it possible to use a camera without exif data , like a hd webcam for example?

thanks,
tom

[Wishgranter]

Yes, you need http://www.agisoft.ru/products/lens/ its free.....

[macsurveyr]

You will get results without exif, but you can use exiftool http://www.sno.phy.queensu.ca/~phil/exiftool/ to add at least a focal length

[Alexey Pasumansky]

Hello Tom,

If 35mm focal length equivalent is close to 50mm then the initial calibration selected by PhotoScan would be more or less correct and the result is supposed to be fine. And in the other cases the manual input of calibration parameters will be required for correct result.

[acind]

While on the topic, what EXIF tags are relevant to help Photoscan get the best possible results? Im using custom lenses with little to no EXIF data and Ive been adding the focal lenght manually, is there any other relevant info that I could add?

Joacim

[Alexey Pasumansky]

Hello Joacim,

In your case it would be better if you use one of the first two cases described in Agisoft StereoScan reference (http://downloads.agisoft.ru/stereoscan/doc/en/sscan.pdf, Chapter 2. Operation modes).