Originally posted by SteveNunez Thanks for the reply.
Question, would the less expensive EBay pentax da to q adapters with aperture ring work just as effectively as the $200+ adapters with a da 300 lens?
I've found a few adapters on eBay but not sure about the aperture ring adjustments that are claimed.
There are 3 types of K to Q adapters. The Pentax Official adapter is the $200 version and without a doubt the most effective and feature rich of the three. It has its own shutter so you have far greater control over exposure time with it, particularly during flash.
Review: Pentax K to Q-mount Adapter - Introduction | PentaxForums.com Reviews
The others do not have their own shutter and vary on whether you can control the f-stop manually. The cheapest ones do not allow aperture changes so you have to be using a lens with its own aperture ring. The more expensive non-Pentax models have their own aperture control.
I own a non-Pentax model that allows for aperture control on lenses without their own ring.
Hope that helps.
Last edited by Docrwm; 12-28-2014 at 05:59 PM.