Nothing is misleading here at all.
That
specific comment you quoted was directed to a specific link which, when I clicked it, went to an RF (radio) remote. There are RF remotes available and they work well with Pentax cameras with a cable-release jack. Looking back at it, I think the poster meant an IR remote. But my point is the same: RF remotes exist and work well.
Your comment that the Pentax does not have a radio receiver shows an ignorance of how RF remotes work. RF remotes have two components: a small receiver that plugs into the cable release jack, and a tiny transmitter that the user holds. It works very well. I've used one for countless shots. It's nice because I can set the camera at some distance, aim it as I please (no line of sight required) and trigger the shutter from a distance. For animal shots and other more complex self-triggered shots, it's great.
On the Remotes F and C the "user replaceable" battery requires a
very tiny phillips-head screw-driver and these three little screws are installed
extremely tightly at the factory. One often sees them on Marketplace ads with the note "one screw hole is stripped…" I doubt very seriously if Pentax intended the user to change the battery.
to summarize:
1. Very nice third party IR remotes exist that work well with Pentax DSLRs and have a longe range, and more easily replaced batteries, than the Pentax models, and at reasonable prices.
2. RF based remotes, requiring no line of sight and having a long range, may be purchased for a reasonable price and are not hard to use with DSLRs that have a cable-release port (K10D, K20D, K-7, not K2000)
Originally posted by tomwil That is a little misleading. All the current Pentax remotes, including the Pentax and 3rd party remotes, operate by sending an Infra-Red (IR) beam of light to the camera, which does require line-of-sight.
However, none of the remotes use radio waves, and the Pentax cameras do not have radio receivers inside them to pick up any radio waves. A car remote is an example of a radio system, but not Pentax cameras which use the IR system.
Wireless is a term that can be applied both to IR and radio systems, but in this remote case, IR only.