I've got an important question for those with a pre-production K-3.
In 27-point or 9-point AF mode, with a large subject such as a full-length portrait, how many points light up in the viewfinder at the same time? Is it still no more than 2, or can an arbitrary number of points be activated up to the selected number? Do the points need to be connected to each other for them to activate at the same time?
This is of interest to me as a sports photographer because it can greatly affect the camera's ability to track moving subjects. I wrote this a year and a half ago, when the original K-5 was still the flagship model:
Originally posted by DragonLord [,,,] here's what Pentax can do to improve AF performance with moving subjects:
- Allow any number of AF points to work together, even if they are not connected to each other. This is the single most important thing Pentax can do to improve AF performance. It requires treating each point as a separate entity, yet allowing them to be used simultaneously in an arbitrary arrangement. Doing so eliminates many of the issues and limitations listed above and paves the way for much more advanced predictive tracking algorithms to be implemented. It may be possible to implement this for current cameras via a firmware update, but hardware limitations may prevent this from happening.
--DragonLord