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Hi Ja,
Sorry If I wasn't clear on what I had done in my previous post. Hopefully this clears it up a bit.
When I manually zoom the lens the aperture is not adjusting inside. Checked it by doing it off the camera body. And I know the canon body can't adjust the aperture as it has no way of interacting with the lever which controls the aperture.
This is a pentax lens adapted to a canon dslr. So if I have manually set the aperture to wide open. (got it stuck there with blutac atm). And I zoom the lens, I've also checked that the aperture is not changing in the lens. (It remains wide open). Have I effectively got the lens operating at 200mm f3.5?
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