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Old May 26, 2007, 8:11 PM   #11
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oreo57 wrote:
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If I remember correctly there are 2 issues here. 1) Pentax uses a Lookup table to identify it's lenses based on a number in the extended(?) EXIF . I suspect none of the other programs pay any attention to this field. The lens data, I believe is recorded somewhere else as well. This is what other programs use as an identifier.
W/ Pentax software, some 3rd party lenses have a value in the correct field but unfortunately can only be linked to a Pentax product.
What ver 1.2 software changed in the EXIF file is unknown, but apparently a field was moved. Some programs have a hard time w/ things like this Only a guess BTW.
That sound very realistic and makes perfect sense.

I managed to get the 1.10 firmware with the 1.20 header, and sucessfully downgraded to 1.10 and then upgraded back to 1.11. I'm gonna take a couple of shots and see if the Sigma info is there.

Besides adding support for Remote Assistance 3, was anything else confirmed to have changed with Firmware 1.20?
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Old May 27, 2007, 10:17 PM   #12
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If this works, please advise on where you located the firmware. I am having same exact problem with version 1.2 firmware
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Old May 27, 2007, 10:21 PM   #13
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here is a list of the lens tags.

http://www.sno.phy.queensu.ca/~phil/....html#LensType
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Old May 28, 2007, 5:31 PM   #14
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Yep, I can confirm that everything works fine in 1.11.

To be honest I'm not sure where I got the file, but I can try to find it in my Browsers history, or give me your email via PM, and I'll send it to .
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