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Author Topic: Panasonic GX7  (Read 4151 times)

Bob Nicholson

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Panasonic GX7
« on: December 26, 2013, 04:36:16 PM »

Hi folks
Seasons Greetings to one and all  ;D

I've just bought a Panasonic GX7 and I note that the Panasonic software does lens corrections for the lenses, does anyone know if Lightroom has this facility built in or do you have to use the Panasonic RAW conversion software?

Cheers
Bob
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PhotoEcosse

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Re: Panasonic GX7
« Reply #1 on: December 27, 2013, 04:46:46 AM »

I use the GX7 with the Panasonic 20mm f/1.7 lens and my Lightroom LR5.3 has no problem with the Raw files but does not have a custom profile for the lens (or, indeed, any Panasonic lenses). It is a very easy matter to create your own custom profile for any lens that is not yet included by Adobe.

I wouldn't dream of departing from Lightroom and using the Panasonic software for Raw conversion. Lightroom is the processing hub for all of my photographic cataloguing and processing and it would be crazy to use anything else for one camera/lens combination.
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PhotoEcosse

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Re: Panasonic GX7
« Reply #2 on: December 27, 2013, 05:32:12 AM »

....in fact, I have just discovered that a profile for the 20mm f/1.7 lens is available via the Adobe Lens Profile Downloader.


http://www.adobe.com/support/downloads/detail.jsp?ftpID=5492

.
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Ken Bennett

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Re: Panasonic GX7
« Reply #3 on: December 27, 2013, 07:55:13 AM »

In general, the lens corrections are built into Lightroom and Camera Raw for Micro 4/3 lenses.
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PeterAit

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Re: Panasonic GX7
« Reply #4 on: December 27, 2013, 10:19:15 AM »

In general, the lens corrections are built into Lightroom and Camera Raw for Micro 4/3 lenses.

Is there a way to view the list of lenses for which corrections are available?
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PhotoEcosse

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Re: Panasonic GX7
« Reply #5 on: December 27, 2013, 10:46:14 AM »

Is there a way to view the list of lenses for which corrections are available?

Develop Module
Lens Corrections
Profile
Make (select the make)
Model - will list the lenses for that make
Profile - will show the profile selected for that make and model

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Bob Nicholson

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Re: Panasonic GX7
« Reply #7 on: December 27, 2013, 05:44:04 PM »

Many thanks,
Bob
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B.J.

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Re: Panasonic GX7
« Reply #8 on: December 28, 2013, 10:45:18 PM »

Lens corrections for Panasonic micro 4/3 lenses are in the lens firmware and written to the raw file. Lightroom reads and applies these corrections when it renders the raw file. You don't have any choice about this, and there are no Panasonic lens profiles included in the lens correction section of the develop module.
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Vladimirovich

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Re: Panasonic GX7
« Reply #9 on: December 29, 2013, 11:38:34 AM »

You don't have any choice about this
actually you have but it involves converting to DNG and stripping the opcodes there.
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AFairley

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Re: Panasonic GX7
« Reply #10 on: December 30, 2013, 01:52:58 PM »

Lens corrections for Panasonic micro 4/3 lenses are in the lens firmware and written to the raw file. Lightroom reads and applies these corrections when it renders the raw file. You don't have any choice about this, and there are no Panasonic lens profiles included in the lens correction section of the develop module.

This is the case with every m4/3 lens (Oly, Sigma).  However, using the Adobe lens profiling software and procedure, you can create and install into the correct location on your computer a lens profile that LR (or ACR) will apply on top of the default corrections encoded in the raw file (or baked into the JPEG).  Since the Adobe profiling software takes into account the encoded correction parameters when it creates the custom lens profile you are not "double profiling" by selecting the custom profile in LR.  Alternatively, you can download and install profiles others have created.  (The 20mm f1.7 profile might be one of mine.)

Essentially, you are tweaking the manufacturer's parameters.  If I recall correctly, Eric Chan has said on the relevant Adobe message board that the manufacturer's correction parameters tend to the conservative, so the automatic corrections may leave you slightly undercorrected.
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