Built-in lens profile - M4/3 lenses

[Moshe Ronen]

Hello,

Just bought an Olympus 25mm 1.8 lens, to use on my E-M5.

Adobe Camera Raw (ACR 8.6) reported 'it cannot find a Built-in Profile' for the lens. Why? surely it's a modern lens, only came out last year.

Other lenses I have - Oly 12-50, Oly 40-150, Pani 20mm (older version) - are all recognized by ACR, however, an Oly 45mm 1.8 is not recognized. Is it a lens issue, or is it the E-M5?

With a Pani GX7, ACR reports it applied a built-in profile (both for the 25 and 45mm), but I'm not sure it does anything, it doesn't look so.

Can anyone comment on his experience?

Thanks,
Moshe

 

[Klarno]

Hello,

Just bought an Olympus 25mm 1.8 lens, to use on my E-M5.

Adobe Camera Raw (ACR 8.6) reported 'it cannot find a Built-in Profile' for the lens. Why? surely it's a modern lens, only came out last year.

Other lenses I have - Oly 12-50, Oly 40-150, Pani 20mm (older version) - are all recognized by ACR, however, an Oly 45mm 1.8 is not recognized. Is it a lens issue, or is it the E-M5?

With a Pani GX7, ACR reports it applied a built-in profile (both for the 25 and 45mm), but I'm not sure it does anything, it doesn't look so.

Can anyone comment on his experience?

Thanks,
Moshe

Adobe hasn't bothered to create their own profiles for MFT lenses because the MFT standard mandates that each lens for the system has its own profile for distortion and chromatic aberration (n.b. CA correction is only applied in Olympus cameras starting with the E-M1, but applied in all Panasonic cameras). This profile is built into the lens firmware, injected into the RAW file, and automatically applied with no provision to override it in all mainstream RAW converters including ACR/Lightroom.

--
http://www.photoklarno.com

 

[Moshe Ronen]

Adobe hasn't bothered to create their own profiles for MFT lenses because the MFT standard mandates that each lens for the system has its own profile for distortion and chromatic aberration (n.b. CA correction is only applied in Olympus cameras starting with the E-M, but applied in all Panasonic cameras). This profile is built into the lens firmware, injected into the RAW file, and automatically applied with no provision to override it in all mainstream RAW converters including ACR/Lightroom.

--
http://www.photoklarno.com

Thanks Klarno,

When ACR finds an embedded profile and applies it automatically, it displays a message informing you about it. It does it with my 12-50mm and 40-150mm zoom lenses, but not with the two primes lenses 25mm and 45mm - all on a Oly E-M5 body. On a Pani GX7 body, I get this message with all four lenses.

If I compare the results for the prime lenses out of ACR with those from RawDigger (which I assume applies no corrections), it seems ACR did nothing.

Moshe

 

[Mark Thornton]

The correction applied for the 45mm is barely perceptible.

 

[Thomas Niemann]

Adobe hasn't bothered to create their own profiles for MFT lenses because the MFT standard mandates that each lens for the system has its own profile for distortion and chromatic aberration (n.b. CA correction is only applied in Olympus cameras starting with the E-M, but applied in all Panasonic cameras). This profile is built into the lens firmware, injected into the RAW file, and automatically applied with no provision to override it in all mainstream RAW converters including ACR/Lightroom.

--
http://www.photoklarno.com

Thanks Klarno,

When ACR finds an embedded profile and applies it automatically, it displays a message informing you about it. It does it with my 12-50mm and 40-150mm zoom lenses, but not with the two primes lenses 25mm and 45mm - all on a Oly E-M5 body. On a Pani GX7 body, I get this message with all four lenses.

If I compare the results for the prime lenses out of ACR with those from RawDigger (which I assume applies no corrections), it seems ACR did nothing.

Moshe

Interesting. Where is this message displayed in ACR (Photoshop CC) as I don't see it for my 40-150mm lens.

 

[Moshe Ronen]

Adobe hasn't bothered to create their own profiles for MFT lenses because the MFT standard mandates that each lens for the system has its own profile for distortion and chromatic aberration (n.b. CA correction is only applied in Olympus cameras starting with the E-M, but applied in all Panasonic cameras). This profile is built into the lens firmware, injected into the RAW file, and automatically applied with no provision to override it in all mainstream RAW converters including ACR/Lightroom.

 

[Klarno]

Adobe hasn't bothered to create their own profiles for MFT lenses because the MFT standard mandates that each lens for the system has its own profile for distortion and chromatic aberration (n.b. CA correction is only applied in Olympus cameras starting with the E-M, but applied in all Panasonic cameras). This profile is built into the lens firmware, injected into the RAW file, and automatically applied with no provision to override it in all mainstream RAW converters including ACR/Lightroom.

--
http://www.photoklarno.com

Thanks Klarno,

When ACR finds an embedded profile and applies it automatically, it displays a message informing you about it. It does it with my 12-50mm and 40-150mm zoom lenses, but not with the two primes lenses 25mm and 45mm - all on a Oly E-M5 body. On a Pani GX7 body, I get this message with all four lenses.

If I compare the results for the prime lenses out of ACR with those from RawDigger (which I assume applies no corrections), it seems ACR did nothing.

Moshe

Ok, I see what you mean now. I hadn't noticed that before because AFAIK that message isn't displayed in Lightroom--but it's easy enough to load them into ACR.

Unfortunately I don't have the 25mm or 45mm to be able to test. The following isn't meant as analysis of the problem, but data we might be able to use to get to the bottom of the problem:

All of my MFT lenses are listing "Built-in lens profile applied" on all cameras I've had (GH2, E-PL1, E-M1, E-PM2), except the Sigma 19mm f/2.8 and 30mm f/2.8 (which I didn't expect to supply profile corrections, being designed optically for a format which didn't have a provision for built-in lens profiles at the time).

Interestingly, the Sigma lenses and my Four Thirds lenses list a profile correction for chromatic aberration only on the E-M1 and not on the GH2--which points to CA correction on the newer image processor being fully automated, or somehow they have CA profiles for unprofiled FT and MFT lenses built into the camera (RAWs from manual focus lenses don't list CA correction).

For what it's worth, from reviews I can find, distortion on the 45mm is marginal, and the built-in profile correction only improves it by 0.3%. By accounts the 25mm's distortion is similar. Perhaps Olympus has opted not to apply it with these lenses on newer cameras. I'd need to have a look at RAWs generated from these lenses on a variety of cameras to be able to come to some sort of conclusion here (Panasonic, Olympus 12mp, Olympus 16mp, and Olympus with Truepic 7 processor).

--
http://www.photoklarno.com

 

[Thomas Niemann]

Adobe hasn't bothered to create their own profiles for MFT lenses because the MFT standard mandates that each lens for the system has its own profile for distortion and chromatic aberration (n.b. CA correction is only applied in Olympus cameras starting with the E-M, but applied in all Panasonic cameras). This profile is built into the lens firmware, injected into the RAW file, and automatically applied with no provision to override it in all mainstream RAW converters including ACR/Lightroom.

 

[Thomas Niemann]

Ok, I see what you mean now. I hadn't noticed that before because AFAIK that message isn't displayed in Lightroom--but it's easy enough to load them into ACR.

Yes, this message is in ACR but not LR. However, they both apply the lens correction contained in the Raw file. I verified by comparing both versions in Photoshop, and also a version processed in dcraw (that does no correction).

 

[mikeshore]

I have been infuriated for ages about Adobe's apparent dismissal of M4/3 lens profiles, and have been using DxO as a work-around. So, I was very interested to read these posts. But, what do you make of this ...?

When I loaded an .ORF file directly into DxO, a significant lens distortion correction could be applied. Indeed, the original might have been taken with a fish-eye! However, when I loaded the file into DxO via LightRoom, no correction was possible. I repeated this exercise with 17mm, 25mm, and 75mm primes. To achieve this, the file has to be loaded WITH LR corrections. I still have to check whether or not there is a 'no correction' option in DxO and whether or not I could sneak it into LR.

When I've finished decorating the kitchen (!), I will save the files in pairs, merge them and compare them at 100 and 200%.

Cheers for now!

 

[Brian D. Schneider]

Adobe hasn't bothered to create their own profiles for MFT lenses because the MFT standard mandates that each lens for the system has its own profile for distortion and chromatic aberration (n.b. CA correction is only applied in Olympus cameras starting with the E-M, but applied in all Panasonic cameras). This profile is built into the lens firmware, injected into the RAW file, and automatically applied with no provision to override it in all mainstream RAW converters including ACR/Lightroom.

 

[geriuArbata]

Interestingly, the Sigma lenses and my Four Thirds lenses list a profile correction for chromatic aberration only on the E-M1 and not on the GH2--which points to CA correction on the newer image processor being fully automated, or somehow they have CA profiles for unprofiled FT and MFT lenses built into the camera (RAWs from manual focus lenses don't list CA correction).

For what it's worth, from reviews I can find, distortion on the 45mm is marginal, and the built-in profile correction only improves it by 0.3%. By accounts the 25mm's distortion is similar. Perhaps Olympus has opted not to apply it with these lenses on newer cameras. I'd need to have a look at RAWs generated from these lenses on a variety of cameras to be able to come to some sort of conclusion here (Panasonic, Olympus 12mp, Olympus 16mp, and Olympus with Truepic 7 processor).