Author Topic: Wrong Lens Type Applied  (Read 55 times)

Offline mklass

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Wrong Lens Type Applied
« on: September 19, 2026, 02:49:55 PM »
I am using PM Plus version 2026.6, build 9175 (2cfdfbb) on a M4 MacBook Pro running MacOS 27.0 (Golden Gate).

For a long time I have used a Megadap ETZ21 Pro so that I can mount Sony E mount lenses on my Nikon Z cameras. This has worked flawlessly, until a recent problems came up. When I shoot on my Z50II with a Sony 20mm f/2.8 lens, PM reports the Lens Type as SAMYANG AF 135mm F1.8, but with the lens focal length as 20mm. (See attached Info Text screen shot. However, if I look at the EXIF in FastRaw Viewer, it shows the lens correctly (see attached FastRaw Viewer screenshot.)

I have checked against a shot using the actual SAMYANG AF 135mm F1.8 as well as another lens SAMYANG AF 35mm F2.8. PM reports the lens type of those 2 correctly.

What is happening with the Sony lens and how do I fix this?

Offline mklass

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Re: Wrong Lens Type Applied
« Reply #1 on: Yesterday at 08:01:10 AM »
Some additional info:

I tried this lens on my Nikon Z8. The 20mm Sony lenstype, {lt}, is reported as an AF SAMYANG 35mm F2.8. Same basic problem, but with different, but still incorrect results.

When I used this lens some time ago on my original Z50, PM did report the ciorect lens type. The most recent file I have using that combination is from February 2023. I don't know what version of PM+ I was using at the time, but it would have been the most recent update available. The file is attached.

Offline Maury-Support

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Re: Wrong Lens Type Applied
« Reply #2 on: Today at 01:12:43 PM »
Hi mklass,

May you email us additional NEF sample files to support@camerabits.com and compress them into a ZIP folder please?

The previous sample file downloads as a TIFF. That TIFF shows 20mm f/2.8 for EXIF Lens Info.

In Photo Mechanic 2026.6 build 9175 on macOS Tahoe, {lenstype} evaluates to "AF 20mm f/2.8G".

Offline mklass

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Re: Wrong Lens Type Applied
« Reply #3 on: Today at 03:04:13 PM »
I tried E-mailing, but I don't think it when through as my email serves won't send a file that size (99GB). Do you have a way to FTP to you?