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02-14-2011, 04:13 PM   #1
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645d Len Correction

Does enabling the "Lens Correction" on my 645D do anything to DNG/PEF files?
Or is it just for shooting incamera jpegs?

Steven

02-14-2011, 04:37 PM   #2
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AFIK it only affects in camera Jpegs.
02-14-2011, 04:57 PM   #3
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Lightroom 3 (and the most recent ACR) has correction profiles for most of the recent Pentax 645 lenses (totally 15 profiles for all the FA lenses). Pentax supplied these profiles to Adobe.

http://kb2.adobe.com/cps/846/cpsid_84666.html

For manual unchipped A lenses since the lens type is not recorded in the raw files, the correction is not automatic. But one can always manually select the corresponding FA lens profile in the most cases (except for, for example, 35mm and 150mm where the FA and A designs are different).

By difinition, RAW files are directly off the sensor, not something "corrected". To the most they can contain correction data (profile) but the actual job is always done in RAW conversion.

Pentaxsmc PENTAX-D FA645 55mmF2.8AL[IF] SDM AW
Pentaxsmc PENTAX-FA645 33-55mmF4.5AL
Pentaxsmc PENTAX-FA645 35mmF3.5AL[IF]
Pentaxsmc PENTAX-FA645 45mmF2.8
Pentaxsmc PENTAX-FA645 45-85mmF4.5
Pentaxsmc PENTAX-FA645 55-110mmF5.6
Pentaxsmc PENTAX-FA645 75mmF2.8
Pentaxsmc PENTAX-FA645 80-160mmF4.5
Pentaxsmc PENTAX-FA645 MACRO 120mmF4
Pentaxsmc PENTAX-FA645 150mmF2.8[IF]
Pentaxsmc PENTAX-FA645 150-300mmF5.6ED[IF]
Pentaxsmc PENTAX-FA645 200mmF4[IF]
Pentaxsmc PENTAX-FA*645 300mmF4ED[IF]
Pentaxsmc PENTAX-FA645 300mmF5.6ED[IF]
Pentaxsmc PENTAX-FA645 400mmF5.6ED[IF]

Last edited by leping; 02-14-2011 at 05:10 PM.
02-14-2011, 05:39 PM   #4
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Original Poster
So then there is no reason to enable Lens Correction, It says in the manual it saves the info in the raw file but I assume only the pentax digital camera utility can read this?
I downloaded the latest version and it crashes a lot on my MacPro and it is so SLOW.

02-14-2011, 07:43 PM   #5
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I dislike Pentax software, and I'm also on MacPro. Are there alternatives for the 645D, such as PhaseOne?
02-14-2011, 07:57 PM   #6
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QuoteOriginally posted by Smolk Quote
Are there alternatives for the 645D, such as PhaseOne
Lightroom or Aperture are you best choices, Capture one is not very good at dealing with DNG files, or getting the camera profiles correct. ( I use several different cameras that use DNG)
02-14-2011, 09:10 PM   #7
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QuoteOriginally posted by Smolk Quote
I dislike Pentax software, and I'm also on MacPro. Are there alternatives for the 645D, such as PhaseOne?
RAW Developer if you ask me. The most "film-like". But no lens corrections there (can be done later in Photoshop).
02-14-2011, 11:35 PM   #8
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I loaded up the Pentax software - it lasted a day. All I use now is Adobe Camera Raw and CS5.

I leave all corrections turned off in the camera setting and ACR does a good job on corrections and it's easy to dial the corrections back using the sliders if you think the corrections are a bit overdone.

02-15-2011, 10:20 AM   #9
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Lepig wrote
"But one can always manually select the corresponding FA lens profile in the most cases (except for, for example, 35mm and 150mm where the FA and A designs are different)."

Lepig: I have several MF lenses. How would I choose an AF lens correction in ACR/CS5?
Thanks in advance
Dave
02-15-2011, 12:25 PM   #10
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QuoteOriginally posted by gurtch Quote
Lepig: I have several MF lenses. How would I choose an AF lens correction in ACR/CS5?
Thanks in advance
Dave
I only used LightRoom 3. You turn the lens correction module ON, and select lens profile from the pull-down menu there.

Once I am home I will double check to give you more details. Thanks.
02-15-2011, 07:08 PM   #11
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QuoteOriginally posted by gurtch Quote
Lepig wrote
"But one can always manually select the corresponding FA lens profile in the most cases (except for, for example, 35mm and 150mm where the FA and A designs are different)."

Lepig: I have several MF lenses. How would I choose an AF lens correction in ACR/CS5?
Thanks in advance
Dave
In ACR there are a number of tabs across the top of the adjustment fields - like basic corrections, detail, effects ....etc and one of those tabs is the lens correction tab, it sort of looks like ([]).

Select that tab and from there you can click auto, or you use the drop down menus to select the camera and lens, or you can use the slider bars to do it manually.

In CS5 it's in the Filters menu and is called Lens Correction. Same deal as ACR where you can select auto if the info is in the exif data, use drop down menus, or use sliders to dial in your own correction.
02-15-2011, 07:16 PM   #12
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Lepig & Warped: Thank you very much. I will check these out. I have 4 MF lenses, so this is good to know.
Dave
02-15-2011, 09:38 PM - 1 Like   #13
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Gurtch: Warped has answered your questions, and here is a picture of the LightRoom lens correction panel, where you just select the make and the lens from the lists.
Attached Images
 

Last edited by leping; 02-15-2011 at 09:44 PM.
02-16-2011, 08:16 AM   #14
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You guys are fabulous.
ave
02-20-2011, 11:54 AM   #15
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QuoteOriginally posted by gurtch Quote
Lepig & Warped: Thank you very much. I will check these out. I have 4 MF lenses, so this is good to know.
Dave
Pentax talks about FA and DFA lenses only.
Photoshop and Lightroom do not have profiles for manual focus lenses.
645D will not correct old lenses too.

But it's not a death
You can do it in converter by yourself, without special profiles.
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