@stlouisblues wrote:
Hello:
Does anyone know if there is an adapter available for attaching Pentax K-Mount manual lenses onto a Canon EOS 6D camera body and , if so, what is the name of the adapter, where to buy it, approximate cost and instructions for its use?
I have a few quality Pentax K-mount lenses (f2.8, f2.8-4, etc. and I would like to use them if there is an adapter that would be functional.
Thank you.
If you can find a proper adapter to use, I suspect that you will be disappointed for a couple of reasons.
One, you will have trouble focusing the lenses. Most of today’s digital DSLRs are designed for use with autofocusing lenses. The viewfinders display AF points, not a manual focusing reticule. AFAIK, Canon does not a manual focusing screen for the 6D.
Two, your images will look soft compared to even the least expensive of today’s autofocusing lenses. Lens technology has dramatically improved over the last couple of decades, due in large part to the improvements in manufacturing.
Three, sometimes you may hear the term “digital lens” to describe a modern AF lens, which alludes to the manufacturing differences between lenses designed and manufactured prior to the introduction of digital image sensors.
Unlike film, the surface of a digital sensor can reflect significant light back up into the lens. This can create images with haze and other undesirable features. So, digital lenses contain lens elements that specially coated to minimize the effects of light reflecting back up into the lens body.
No doubt there may be exceptions out there, for the most part the older lenses that were originally designed for camera bodies that use films do not have these coatings. Only the “best of the best” lenses from the era are worth using with today’s DSLR camera bodies. Like I said earlier, most of the least expensive lenses are sharper than the many of the most expensive lenses from 30+ years ago.
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