Photographers using current versions of Adobe software including Camera Raw 6.1 or later, Photoshop CS5, and Photoshop Lightroom 3 all have a useful tool at their disposal, which can correct for geometric distortion (both barrel and pincushion), chromatic aberration, and lens vignetting -- all with a minimum of fuss. The feature relies on lens profiles, which can be created by the user community. (Adobe themselves also provide a modest number of lens profiles.)

The process of creating a lens profile has been designed to be relatively straightforward, and is achieved using a free Lens Profile Creator tool available from Adobe Labs. (Full instructions are available from Adobe in their Lens Profile Creator Calibration Chart Shooting Quick Start Guide, as well as the full Calibration Chart Shooting Guide, and are beyond the scope of this article.)

While the highest-quality corrections are likely to be achieved with a profile created using your specific camera model (and indeed, your specific lens units so as to cancel out sample variations), very acceptable results can be achieved with profiles created by your fellow photographers -- even if the precise camera model differs. Profiles are specific to either Raw or developed (JPEG, etc.) files, since developed files may already have lens corrections applied to them by the camera or other processing software.

And so, the purpose of this article: to help Pentax photographers share their lens profiles, and to summarize the available profiles. Following at the end of this post is a list of known profiles for first-party and third-party lenses on Pentax camera bodies.

If you have created a profile you'd like to share, or know of somebody who has shared a profile that isn't on our list, please either contact me privately to let me know, or simply reply to this article. I'll do my best to keep the first post in the thread updated with links to the latest profiles. (If you could let me know if I have your permission to add the profile directly as an attachment to this post, that'd be helpful. So would any information on how the profile was created -- body, focal lengths, apertures used, focus distances, and whether the profile is for Raw or developed images. If you know of profiles on other sites, please don't upload somebody else's profile here without their permission -- either provide a link to the site, ask them to join and share the profile here themselves, or both.)

Even if a profile already exists, don't feel shy about submitting your own alternative profile. There's a lot of leeway in profile creation, such as for example the number of focal lengths, apertures, etc. that are included in each specific profile. Adobe's software is designed to interpolate (read: guess) how lens characteristics vary between these user-defined sample points, and so profile creation is a balance between the accuracy of the profile, and the work involved in its creation. Lens sample variation also plays a part, and so do personal user tastes. It's possible that many users may find your alternate profile more to their tastes than an already existing one... :-)

(Note: For now, I've not had a moment to ask for permission from anybody to share their profiles as attachments directly in this article, so for the time being this list consists solely of links to other posts where profiles have been shared.)

Without any further ado, following are the profiles themselves:

Pentax lenses

• smc PENTAX DA 10-17mm F3.5-4.5 ED (IF) Fish-Eye (file type unstated, PENTAX K200D)
  Focal lengths: 3 focal lengths
  Apertures: unstated
  Focus distances: unstated
  
• smc PENTAX DA 12-24mm F4.0 ED AL (IF)
  • Jaitas' profile (Raw, PENTAX K-7)
    Focal lengths: 12mm, 18mm, 24mm
    Apertures: f4, f11
    Focus distances: 1 metre @ 12mm, 1.2 meters @ 18mm, 1.8 meters @ 24mm
    
  • Architorture's profile (Raw, PENTAX K10D)
    Focal lengths: 12mm, 15mm, 18mm, 19mm, and 24mm
    Apertures: f/4, f/5.6, and f/8 (also f/11 @ 12mm)
    Focus distances: adjusted for each FL, from ~4ft to ~8.5ft.
• smc PENTAX DA 14mm F2.8 (Type and camera not stated)
  Focal lengths: 14mm
  Apertures: not stated
  Focus distances: not stated
  
• smc PENTAX-DA 15mm F4 ED AL Limited
  Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
  
• smc PENTAX DA 16-45mm F4.0 ED AL (Raw, PENTAX K-7)
  Focal lengths: 3 focal lengths
  Apertures: f5.6
  Focus distances: unstated
  
• smc PENTAX DA*16-50mm F2.8 ED AL (IF) SDM
  • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
    
  • Ishpuini's profile (Raw, PENTAX K-7)
    Focal lengths: 16, 20, 28, 35, 50
    Apertures: f/2.8 to f/22 at one stop intervals
    Focus distances: 40cm
    
  • Amoringello's profile (Type not stated, Pentax K-7)
    Focal lengths: Three focal lengths
    Apertures: not stated
    Focus distances: not stated
    
  • wjax's profile (Raw, Pentax K-7)
    Focal lengths: Six evenly spaced focal lengths between 16mm-50mm at closer focal distance, three focal lengths (16mm, 33mm, and 50mm) at further focal distance
    Apertures: Four evenly spaced apertures from F2.8-F11
    Focus distances: Two focus distances
• smc PENTAX FA J 18-35mm F4-5.6 AL (Raw, PENTAX K10D)
  Focal lengths: at least 4 focal lengths
  Apertures: at least 4 aperture settings (min to f11)
  Focus distances: at least 2 focus distances
  
• smc PENTAX-DA 18-55mm F3.5-5.6 (Raw, Pentax K20D)
  Focal lengths: 18, 35, 55
  Apertures: f/3.5 to f/22
  Focus distances: 1 single distance
  
• smc PENTAX DA 18-55mm F3.5-5.6 AL WR (Type not stated, Pentax K-7)
  Focal lengths: Three focal lengths
  Apertures: not stated
  Focus distances: not stated
  
• smc PENTAX-DA 18-135mm F3.5-5.6ED AL [IF] DC WR (Raw, Pentax K-5)
  Focal lengths: 18mm, 24mm, 36mm, 53mm, 68mm, 100mm, 135mm
  Apertures: f/3.5*, f/4*, f/5.6, f/8, f/11, f/16, f/22, f/32*, f/40* (*depending on focal lengths)
  Focus distances: varied
  
• smc PENTAX DA 21mm F3.2 AL Limited
  
  • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
    
  • Ishpuini's profile (Raw, PENTAX K-7)
    Focal lengths: 21mm
    Apertures: f/3.2, f/4, f/5.6, f/8, f/11, f/16, f/22
    Focus distances: 38cm, 80cm
    
  • Christine Tham's profile (Raw, PENTAX K10D)
    Focal lengths: 21mm
    Apertures: at least 4 aperture settings (min to f11)
    Focus distances: at least 2 focus distances
• smc PENTAX FA* 24mm F2 AL (IF) (Raw, PENTAX K10D)
  Focal lengths: 24mm
  Apertures: at least 4 aperture settings (min to f11)
  Focus distances: at least 2 focus distances
  
• smc PENTAX FA 28-70mm F4 AL (Raw, PENTAX K-m [aka K2000])
  Focal lengths: 28mm, 35mm, 50mm, 70mm
  Apertures: f/4, f/8, f/16
  Focus distances: not stated
  
• smc PENTAX FA 28-105mm F3.2-4.5AL (IF) (Raw, PENTAX K10D)
  Focal lengths: at least 4 focal lengths
  Apertures: at least 4 aperture settings (min to f11)
  Focus distances: at least 2 focus distances
  
• smc PENTAX-FA 31mm F1.8AL Limited
  Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
  
• smc PENTAX DA 35mm F2.8 Macro Limited
  
  • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
    
  • mtngal's profile (Raw, PENTAX K-7)
    Focal lengths: 35mm
    Apertures: 3 apertures
    Focus distances: 2 focus distances
• smc PENTAX-DA 40mm F2.8 Limited
  Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
  
• smc PENTAX-FA 43mm F1.9 Limited
  
  • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
    
  • Christine Tham's profile (Raw, PENTAX K10D)
    Focal lengths: 43mm
    Apertures: at least 4 aperture settings (min to f11)
    Focus distances: at least 2 focus distances
• smc PENTAX DA* 50-135mm F2.8 ED (IF) SDM
  
  • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
    
  • amoringello's profile (Type not stated, Pentax K-7)
    Focal lengths: Three focal lengths
    Apertures: not stated
    Focus distances: not stated
• smc PENTAX-DA 50-200mm F4-5.6 ED (Raw, Pentax K20D)
  Focal lengths: 50, 105, 200
  Apertures: f/4 to f/22
  Focus distances: 1 single distance
  
• smc PENTAX-DA*55mm F1.4 SDM
  Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
  
• smc PENTAX DA 55-300mm F4-5.8 ED (Raw, PENTAX K-7)
  Focal lengths: 55, 70, 100, 200 and 300mm
  Apertures: 3 apertures
  Focus distances: Varied
  
• smc PENTAX DA* 60-250mm F4 ED (IF) SDM (Raw, PENTAX K-7)
  
  • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
    
  • bymy141's profile (Raw, PENTAX K-7)
    Focal lengths: 60, 128, 140, 250mm
    Apertures: f4, f8, f16, f32
    Focus distances: 1.5m, 3m, 5m
    
  • wjax's profile (Raw, PENTAX K-7)
    Focal lengths: 60, 170, 250mm
    Apertures: f4, f5.6, f8, f11
    Focus distances: Two focus distances
    
• smc PENTAX DA 70mm F2.4 Limited
  
  • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
    
  • Christine Tham's profile (Raw, PENTAX K10D)
    Focal lengths: 70mm
    Apertures: at least 4 aperture settings (min to f11)
    Focus distances: at least 2 focus distances
• smc PENTAX FA 77mm F1.8 Limited
  
  • Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
    
  • mtngal's profile (Raw, PENTAX K-7)
    Focal lengths: 77mm
    Apertures: f1.8, f8. f18
    Focus distances: 2 distances
• smc PENTAX-DA*200mm F2.8 ED [IF] SDM
  Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
  
• smc PENTAX-DA*300mm F4 ED [IF] SDM
  Profiled by manufacturer, included in Camera Raw 6.3 / Lightroom 3.3
  
• smc PENTAX-D FA645 55mmF2.8AL[IF] SDM AW
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 33-55mmF4.5AL
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 35mmF3.5AL
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 45mmF2.8
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 45-85mmF4.5
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 55-110mmF5.6
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 75mmF2.8
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 80-160mmF4.5
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 MACRO 120mmF4
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 150mmF2.8[IF]
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 150-300mmF5.6ED[IF]
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 200mmF4[IF]
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA*645 300mmF4ED[IF]
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 300mmF5.6ED[IF]
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
  
• smc PENTAX-FA645 400mmF5.6ED[IF]
  Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

Third-party lenses

• Sigma
  
  • 4.5mm F2.8 EX DC CIRCULAR FISHEYE
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 8mm F3.5 EX DG CIRCULAR FISHEYE
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 8-16mm F4.5-5.6 DC HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 10mm F2.8 EX DC FISHEYE HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 10-20mm F3.5 EX DC HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 10-20mm F4-5.6 EX DC / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 12-24mm F4.5-5.6 EX DG ASPHERICAL / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 15mm F2.8 EX DG DIAGONAL FISHEYE
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 17-50mm F2.8 EX DC OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 17-70mm F2.8-4 DC MACRO OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 17-70mm F2.8-4.5 DC MACRO / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 18-50mm F2.8 EX DC MACRO / HSM
    
    • Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
      
    • Christine Tham's profile (Raw, PENTAX K10D)
      Focal lengths: at least 4 focal lengths
      Apertures: at least 4 aperture settings (min to f11)
      Focus distances: at least 2 focus distances
      
  • 18-50mm F2.8-4.5 DC OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 18-125mm F3.8-5.6 DC OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 18-200mm F3.5-6.3 DC
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 18-250mm F3.5-6.3 DC OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 20mm F1.8 EX DG ASPHERICAL RF
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 24mm F1.8 EX DG ASPHERICAL MACRO
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 24-70mm F2.8 EX DG MACRO
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 24-70mm F2.8 IF EX DG HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 28mm F1.8 EX DG ASPHERICAL MACRO
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 28-70mm F2.8-4 DG
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 28-300mm F3.5-6.3 DG MACRO
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 30mm F1.4 EX DC / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 50mm F1.4 EX DG HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 50-150mm F2.8 II EX DC HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 50-200mm F4-5.6 DC OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • MACRO 50mm F2.8 EX DG
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 50-500mm F4-6.3 EX DG / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 50-500mm F4.5-6.3 DG OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • MACRO 70mm F2.8 EX DG
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 70-200mm F2.8 EX DG OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 70-200mm F2.8 II EX DG MACRO HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 70-300mm F4-5.6 DG MACRO
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 70-300mm F4-5.6 DG OS
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 70-300mm F4-5.6 DG MACRO
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • 85mm F1.4 EX DG HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 100-300mm F4 EX DG / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • MACRO 105mm F2.8 EX DG
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 120-400mm F4.5-5.6 DG OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 150-500mm F5-6.3 DG OS HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO MACRO 180mm F3.5 EX DG / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 300mm F2.8 EX DG / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 500mm F4.5 EX DG / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
    
  • APO 800mm F5.6 EX DG / HSM
    Profiled by manufacturer, included in Camera Raw 6.1 / Lightroom 3.0
• Tamron
  
  • SP 10-24mm F/3.5-4.5 DiII B001P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • SP 17-50mm F/2.8 DiII A16P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • 18-200mm F/3.5-6.3 DiII A14P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • 18-250mm F/3.5-6.3 DiII A18P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • SP 28-75mm F/2.8 Di A09P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • 28-200mm F/3.8-5.6 Di A031P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • AF 28-300mm F/3.5-6.3 XR Di LD Aspherical [IF] Macro (A061) (Raw, PENTAX K10D)
    Focal lengths: at least 4 focal lengths
    Apertures: at least 4 aperture settings (min to f11)
    Focus distances: at least 2 focus distances
    
  • 28-300mm F/3.5-6.3 Di A061P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • SP 70-200mm F/2.8 Di A001P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • 70-300mm F/4-5.6 Di A17P
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2
    
  • SP 90mm F/2.8 Di MACRO 1:1 272EP
    Profiled by manufacturer, included in Camera Raw 6.2 / Lightroom 3.2

(Edit: Still to do: Tidy up the formatting, add info on where to put the profiles for different apps / operating systems, include direct links to zipped attachments and request permission from profile authors to re-upload their profiles where they're not already zipped. *Phew!*) ;-)

[bobrapp]

Adobe's latest camera-raw (6.3) includes several new Pentax profiles. The list at the head needs updating.

[knoxploration]

Adobe Labs - Downloads: Adobe Lens Profile Creator

There is a Adobe Lens Profile Downloader, maybe it can't answer ... how the profile can be share and being download...

Yes, we've mentioned the downloader previously. Unfortunately it's still not built into Lightroom or Photoshop / Camera Raw, and is bundled with software labeled prerelease, so I'd guess many (or most) users aren't going to download it yet.

[bluesaxplayer]

I loaded Lightroom last night and was notified of the v3.3 update which I installed. If contains profiles for a number of DA and FA lenses :-)

[knoxploration]

Adobe's latest camera-raw (6.3) includes several new Pentax profiles. The list at the head needs updating.

I loaded Lightroom last night and was notified of the v3.3 update which I installed. If contains profiles for a number of DA and FA lenses :-)

Way ahead of ya, guys. Jump back to page four and you'll see I mentioned the updates to Camera Raw and Lightroom, and I've already added the new profiles to the list.

[Lampo]

I have installed the profile downloader, but there are not much lensprofiles for Pentax lenses. Would it be an idea to upload all the lens profiles that we have here to Adobe?

Because I have tried to add lens profiles the way it is mentioned in this thread, but it simply does not work, I have no additional lenses that come up in Lightroom...

[knoxploration]

I have installed the profile downloader, but there are not much lensprofiles for Pentax lenses. Would it be an idea to upload all the lens profiles that we have here to Adobe?

Because I have tried to add lens profiles the way it is mentioned in this thread, but it simply does not work, I have no additional lenses that come up in Lightroom...

We can't upload the profiles here ourselves, as they're not our work. We can request the original creators do so, but it's entirely their own decision.

Installing profiles manually works just fine though -- many of us have done so. (I don't even have the profile downloader on my own system.)

If it's not working for you, you're probably not putting the profiles in the right place, or perhaps you've not restarted Lightroom after placing the profiles. (You have to do so.)

What's your operating system, and where are you putting the profiles?

[Lampo]

Thanks, I had some problems with the configuration of the destination folder, but after some fiddling around everythings seems to work now!

[knoxploration]

Thanks, I had some problems with the configuration of the destination folder, but after some fiddling around everythings seems to work now!

Great, glad it's sorted out for you!

[GMariano]

Hola a todos, soy nuevo en este foro y no se si hay posibilidad de obtener el perfil de mi cámara (k20 D) con la lente de Sigma APO DG 70 300 Macro... veo que esta en la lista pero no logro encontrar el "link" para la descarga.

Gracias de antemano.

Saludos,

Mariano

[knoxploration]

Hola a todos, soy nuevo en este foro y no se si hay posibilidad de obtener el perfil de mi cámara (k20 D) con la lente de Sigma APO DG 70 300 Macro... veo que esta en la lista pero no logro encontrar el "link" para la descarga.

Gracias de antemano.

Saludos,

Mariano

Hi Mariano, welcome to the forum! The reason there isn't a link is because that lens is supported natively by Camera Raw and Lightroom. You don't need to download anything, so long as you're running the latest versions. Make sure you're using at least Camera Raw 6.1 or Lightroom 3.0, and you'll find the lens profile is already on your computer. Sigma themselves provided the data for the Adobe-supplied profile.

Hope that helps!

[GMariano]

Hola knoxploration,

Muchas gracias; en efecto el perfíl sí que esta incluido; ocurria que no encontraba por ninguna parte el cuerpo Pentax... Cuando cargué los perfiles de las lentes pentax AD 18..55 y 50 .. 200 aparecio la Pentax y los objetivos relacionados, incluido el de Sigma.

Saludos,
Mariano

[lawsonstone]

I have hunted around and it appears that a profile for the DA 18-135 hasn't been done. I have no idea how to do these things, but am hopeful some of the creative folk here might prepare a profile for this wonderful new lens.

[knoxploration]

You're correct, nobody's profiled that lens yet (or at least, if they've done so, they've not released the results publicly here.) It being such a relatively new lens, I'm not surprised.

Hopefully someone will do so, given time, but you might consider being that person yourself. The profile creator is free, and the process is relatively straightforward, if perhaps somewhat tedious. Everything you need to know to create a profile yourself can be found here:

Lens Profile Creator User Guide
Lens Profile Creator Frequently Asked Questions

Calibration Chart Shooting Quick Start
Calibration Chart Shooting Guide

The Profile Creator itself can be downloaded here:

Adobe Lens Profile Creator Prerelease 3

[netuser]

I'm quite "mad" because there are not so many Pentax lenses available (From Pentax itself).
Looking at tamron for example, ... this means we have better suport buying from them then from Pentax GRRRR

I really want a good lens profile for DA 12-24/4!!!

[richardplondon]

Great effort, thanks very much.

For those who do not know, it may be worth clarifying that each profile is created either from JPG (or TIFF) testchart shots, or from DNG testcard shots. The former type (only) will auto-detect and list out when a JPG image is being processed, the latter when a Raw image is being processed.

There is a straightforward "kludge" method of converting a copy of a Raw based profile so that it will show up for camera JPGs: Adobe lens profiles: Raw and JPG (LR3, ACR): Software / Retouching Forum: Digital Photography Review.

This is a single-line edit of the XMP file, merely changing a 'this is for Raw' entry from "True" to "False". Of course any in-camera JPG lens correction should have been disabled, if this is to produce the right results.

I hope this is helpful to people - RP