The shot I posted recently taken with an OM mount Tokina RMC 17/3.5
mounted on a 5D looked pretty good to me. No purple color fringing
visible around the tree limbs against the sky even at the far corner of
the frame. I don't think the RMC line was Tokina's best but it looks
good enough for me. I've been meaning to test it against the Canon
17-40 f/4L at 17mm but haven't gotten one of Walt's round tuits yet.
Chuck Norcutt
Winsor Crosby wrote:
> I don't think there is any question about the advantage of
> telecentricity. My problem with Oly was not only the exaggeration,
> but that they invented the concept and the solution. They also
> implied it was so important that all lenses had to be "digital".
> Telecentricity is only important for wide angle lenses. There is no
> problem with the angle of incidence with a 90/2 or probably even at
> the wide end of the 35-80. Many of Nikon's wide angle lenses were
> redesigned for telecentricity even for the smaller DX sensor. The
> puzzle is why Canon did not and their customers are seeking WA lenses
> from other makers to adapt to their cameras, but maybe Canon also
> thinks the advantage is exaggerated.
>
>
>
> Winsor
> Long Beach, California, USA
>
>
>
>
> On Feb 9, 2006, at 8:59 AM, Joel Wilcox wrote:
>
>
>>On 2/9/06, AG Schnozz <agschnozz@xxxxxxxxx> wrote:
>>
>>>>Many of us remember the Oly presentation that explained why OM
>>>>lenses would not be usable on a digital body. To a certain
>>>>extent Canon and Nikon have shown it to be exaggerated, but
>>>>it is interesting to see the latest Luminous Landscape
>>>>article has a reference to colour shifting across the sensor.
>>>
>>>I do believe that they did stretch it a little bit, but it
>>>really is true. However, in the case of the 4/3 sensor, the
>>>amount of it is very limited. A full-frame 35mm definitely
>>>would be problematic if, say, the sensor used in the E-1 were
>>>FF, 35mm.
>>
>>As I said in a different thread, I have also noticed the improvement
>>in color with DZ lenses. I have some doubts as to whether this is due
>>to telecentricity or just that the lenses incorporate improvements
>>that also are shared by late-model Zuikos like the 90/2 or 35-80/2.8
>>(the best of my Zuikos for color). Maybe it's both.
>>
>>Joel W.
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