If you buy PTLens you'll get my 24/2.8 profile and PTLens will correct
it for you. :-)
Chuck Norcutt
On 10/19/2010 8:11 AM, Wiliam Wagenaar wrote:
> Ouch,
>
> I never knew the zuiko 24/2.8 had that much distortion.
>
> Wiliam
>
> -----Original Message-----
> From: Chuck Norcutt [mailto:chucknorcutt@xxxxxxxxxxxxxxxx]
> Sent: dinsdag 19 oktober 2010 14:01
> To: Olympus Camera Discussion
> Subject: Re: [OM] What to buy for architectural photography at a budget?
>
> There are several lenses in the PTLens database courtesy of yours truly.
> Three of my four Tokina and Tamron AF lenses and my OM mount Tokina
> 17/3.5 and Zuiko 24/2.8 as shot on the 5D. Yes, there are fairly
> exacting requirements for calibration images, especially considering
> that brick buildings are not allowed. You'd think they would be ideal
> but they contain lots of rippling from manual assembly.
>
> It took a bit of scouting to find a suitable building but then I
> realized it was only a couple of miles away. In the US at least, it was
> a common method of construction in the late 50s and early 60s to make
> walls largely of glass and aluminum framework. It seems to be
> especially common in schools of the era and that's what I used.
>
> These shots are of a nearby elementary school. Tokina 17/3.5 on the
> left and Zuiko 24/2.8 on the right. Tom Niemann, author of PTLens,
> commented that my calibration images were some of the best and easiest
> to calibrate that he has ever received. I attribute that to a good target.
> <http://www.chucknorcutt.com/PTLens%20distortion%20tests/index.htm>
>
> Chuck Norcutt
>
>
> On 10/19/2010 3:56 AM, Piers Hemy wrote:
>> I concur with what you say Chuck, save that if it is $25 now, the price
> has
>> increased considerably since I bought it!
>>
>> But I did find that the specifications for images to provide for
> calibration
>> are pretty exacting. It might be better in the circumstances to choose a
>> lens which is already in the PT Lens database, r t heed the following
> advice
>> from the helpfile:
>>
>
--
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