Sigma 50-150mm f2.8 mk2 APO HSM

is there any way to get the exif data to show this lens and not as a Sigma70-200mm f2.8 which is what appears on flickr, assuming this isbeing picked up from what the camera embeds in the image.

Because Sigma back engineered the PKA mount they gave quite a few lenses the same code which can be a right pain at times, especially if you need to do any lens focus adjustment in camera.

If you use Windows try right clicking on the edited Jpeg (if you shoot RAW) and go into details, scroll down to advanced photo and enter Sigma 50-150mm DG EX HSM OS in lens manufacturer. That should then show correctly on Flickr. You can do loads at once by using Ctrl + left to highlight click and the just altering one file.

thanks Mike will give that a go