Wow! That was fast. The problems described below are already fixed.
One was an error in the database. I don't know what the other was.
Anyhow you can now select the Zuiko 24/2.8 for any full frame SLR even
though you might not be able to actually mount it.
Chuck Norcutt
Chuck Norcutt wrote:
> But lens profiles are based on the film/sensor form factor. Therefore,
> the data I supplied for the 24/2.8 is only usable on full frame digital
> or 35mm film. If you want to use a 24/2.8 on a 4/3 camera someone will
> have to submit a separate test. Likewise, it could not be used with a
> Canon small sensor DSLR.
>
> I also discovered a bug in PTLens in that the 24/2.8 profile is not
> accessible to you if you declare that you're using an Olympus 35mm film
> image. All that appears once you've chosen Olympus SLR is DZ lenses
> even though you also say "35mm film". But if you choose Canon or Pentax
> SLR all the 35mm primes in the database are selectable. The Olympus
> related bug also continues further in that, having once chosen Olympus
> SLR and 35mm film if you then go back and change the camera to Canon SLR
> PTLens will go catatonic with respect to distortion correction and
> disable all distortion correction selections. The only way out is to
> exit and restart. But this latter half of the bug only occurs on the
> standalone version and not on the PS plug-in. As a practical matter,
> however, you could tell it that the scanned OM film image was really a
> Canon 5D image. It wouldn't know the difference and would allow access
> to the 24/2.8 profile. Note that PTLens requires you to disable camera
> and/or model # and/or lens type detection in the EXIF if you're going to
> play games with these paramaters.
>
> I've reported the bug to the author but not heard back yet.
>
> Chuck Norcutt
>
>
> C.H.Ling wrote:
>> Thanks! it is good to know PTLens support the old lenses, the
>> vignetting and CA tools are also interesting, at $15 it seems a good
>> investment.
>>
>> C.H.Ling
>>
>>
>> ----- Original Message ----- From: "Chuck Norcutt"
>> <chucknorcutt@xxxxxxxxxxxxxxxx>
>>
>>> I just answered your question by submitting data for the OM mount Tokina
>>> RMC 17/3.5 and Zuiko 24/2.8 with test data shot on a 5D. The data was
>>> added to the PTLens database only yesterday. I would go shoot some more
>>> OM mount lenses if it wasn't so cold and snowy.
>>>
>>> PTLens advises to shoot test images from a distance of 20-50 feet and
>>> that the data should be good for about 10 feet or further. No attempt
>>> is made for support of anything closer than that.
>>>
>>> Chuck Norcutt
>>>
>>> C.H.Ling wrote:
>>>> PTLens looks interesting but I see some problem for shots at
>>>> different focus
>>>> distance, like the Zuiko 18/3.5, it has very slight pincushion
>>>> distortion
>>>> for distance object but high barrel distortion at close distance.
>>>> I wonder if PTLens will accept the OM Zuiko wides, since sooner or
>>>> later I
>>>> will get a 5D successor for my OM lenses ;-)
>>
>>
>> ==============================================
>> List usage info: http://www.zuikoholic.com
>> List nannies: olympusadmin@xxxxxxxxxx
>> ==============================================
>>
>>
>>
>
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List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
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