Eden wrote:If the adapter has glass in it for infinity focus you loose an f stop worth of light or more and some clarity is sacrificed as there is another lens it is going through that is more than often not really quality glass.
there seems to be several adapters on the market and as I can see both glassed and non glassed my assumption is that you need the glass to get infinity focus,( I could be wrong though )
http://www.ebay.com.au/itm/PENTAX-PK-K- ... 368&_uhb=1
http://www.ebay.com.au/itm/Pentax-K-PK- ... f55&_uhb=1
They both claim infinity focus so maybe there is some nikon mount differences ( I know nothing of them )
My pentax k mount to canon EF/EFS is chipped so it gives a f1.4 value to the camera instead of f 0.0 and I think it also give af confirm so the lens/adapter can be used in several menu modes or without enabeling "no lens shutter operation" in the canon's menus
Im still new to this stuff so I am more than likely wrong on some stuff!!!!
Bigfoot1966 wrote:Hello All,
Thankyou for your replies.
I am glad to hear the twin lens kits have a better reputation now.
12 years ago when I bought the twin lens kit for the pentax it was quite average.
I think I will buy the D5300 with the twin lens kit and then buy another Sigma 17-70 f2.8 macro later down the track.
I have seen adapters that will fit my Pentax mount lenses to the Nikon mount.
I am aware that you lose the motorised auto focus, but do you lose any quality?
I have a Sigma 170-500 that I would like to use on the rare occasion.
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