Can Pentax make A Decent Lens? Ricoh have not fixed QC issues...

Started 2 months ago | Discussions thread
BobORama
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Re: Please use better experiment protocol
In reply to Mark Ransom, 2 months ago

Mark Ransom wrote:

Couldn't a decentered lens make the image look like it was off center, even if it wasn't?

Think about a tilt-shift lens - the ultimate decentered lens.   By adjusting the lens's optical axis relative to the sensor, both in position and angle of incidence, you can bring a skewed subject into acceptable focus over the whole field of view.   The miracle of the Scheimpflug principle.

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Pentax K-5 Sigma 10mm F2.8 EX DC HSM Diagonal Fisheye Pentax smc DA 18-55mm F3.5-5.6 AL WR +8 more
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