Problem with my lens specification...

[Servocrank]

I am using the 5d Mark ii with a canon 2.8/20mm lens.  Problem I am having is with a third pary 3d software and integrating Tiff files.

The dialogs are being thrown up by the 3rd party TIFF library that are being used and indicate some issues with the EXIF data embedded in the image file by the camera. It has to do with my lens specification reading the minimum focal length.

I have done a bit of research on this and found this information from here: http://www.cipa.jp/english/hyoujunka/kikaku/pdf/DC-008-2010_E.pdf

LensSpecification

This tag notes minimum focal length, maximum focal length, minimum F number in the minimum

focal length, and minimum F number in the maximum fo

cal length, which are specification information

for the lens that was used in photography. When

the minimum F number is unknown, the notation is

0/0.

Tag = 42034 (A432.H)

Type = RATIONAL

Count = 4

Default = None

Value 1 := Minimum focal length (unit: mm)

Value 2 : = Maximum focal length (unit: mm)

Value 3 : = Minimum F number in the minimum focal length

Value 4 : =

So a couple of questions....why is my camera not setting this value for me? Is there a way that I can manually set the value?

Any thoughts appreciated!

[diverhank]

I'm not sure what it is you are looking for.  All of the pertinent lens info is available elsewhere in the exif data, per the picture that you posted, under lens?