300mm + 1.7x TC = 700mm?

[kylehess10]

I have a 300mm f/2.8 AF-S Nikkor lens with a TC-17E II teleconverter (shooting with a D7000), which should make it a 510mm f/4.8 lens, but every photo I take with the combination come up as a 700mm lens in the EXIF info. What's the reason for that?



Exif | Jaime Garcia | Flickr - Photo Sharing!

 

[Big Mike]

It may be trying to incorporate the 1.5X crop factor.
But that only affects your FOV, not your focal length...so if that's what it's doing...I'd think something's wrong.

 

[tirediron]

Nikon APS-C bodies do in fact "account" for the 1.5x crop factor in their EXIF data.

 

[480sparky45 44]

Then I must have a non-conformist D7000.

 

[pdq5oh]

Mine shows the focal length as sparky's does.

 

[tirediron]

Interesting, both my old D70 and my D300 both show the "multiplied" FL. I wonder if it's something Nikon's changed, or if there's a setting that can be altered? Anyone?

 

[Big Mike]

That's weird...because the focal length doesn't change because of the crop factor...only the field of view.

I could see them using the multiplied focal length for the teleconverter though.

 

[ClickAddict]

I think I remember reading somwhere that certain software will factor in the crop factor, some don't. So perhaps your camera sent one value and the software you used to save/edit your photo modified the EXIF? Just a thought. Could be way off but if you can't find the answer with the camera check the info on your software.