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

Started 2 months ago | Discussions thread
Petroglyph
Senior MemberPosts: 2,569Gear list
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Re: Please use better experiment protocol
In reply to jf_tea, 2 months ago

jf_tea wrote:

shallow DOF at f/1.8

subject distance at left vs. right is significantly different.

Please use better experiment protocol.

Good observation.  I'd have to stick up some calibration charts to tell things like that and that is such tedious work I won't do it unless the lens has to be well centred, such as, for landscape or architecture.  So mid and long telephoto I don't worry unless an OOC lens is obvious in the field.  A couple of lenses from Pentax I've owned have been notably good and there was one lemon that I sold off a while back.  I don't tend to own a lot of OEM lenses.

Cheers.

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Canon EOS 6D Pentax K-3 Canon EF 17-40mm f/4.0L USM Pentax smc DA* 60-250mm F4.0 ED (IF) SDM Sigma 35mm F1.4 DG HSM
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