There are NO IR remotes that will work from behind the k-x. It has only one receptor which is in front. This is a camera fault, not the remotes. I have the Pentax F and it works fine although the range is not as good as I would like. I believe it will work with B, but you have to set it up properly in the camera menu so 1 push triggers the shutter and the second releases it. There are fancier ones with timers, and AFAIK they will all work.
Your dirt is likely on the focusing screen. To test, turn on live view, if you can see it there then it is on the sensor, if not then it is on the focusing screen. Cleaning the screen can be done with a rocket blower, just take off the lens and blow some clean air in. Note you do not want to have the mirror up, you only do that to clean the sensor. The focusing screen is what the image in the viewfinder is projected on. I guess the dirt could also be on the outside of the mirror, but you should be able to see it clearly there by looking into the camera with the lens off. If the dirt is on the viewfinder side of the focusing screen then the screen needs to come out to clean, and that is a little harder. Not difficult but try everything else first.
Edit: Well let me amend that a bit. It looks like the first remote you have listed has a directional lens which is pointed at the front receptor of the camera so it would work from behind. But since it is mounted on the hot shoe, I do not see the point. Unless it has a receiver and a handheld remote, which is not shown in the picture. It looks like it has a button to press on the top, and if it is mounted to the camera why not just use the camera? Maybe I am missing something.
(this was supposed to be a quote but all I keep getting is "The message you have entered is too short. Please lengthen your message to at least 5 characters".
Hi jatrax,
I contacted the supplier of the Seculine ir20 and they never knew how it works either, so they put me in touch with there showroom who hadn't heard of the product but there going to see if they can dig one out and have a look at the instruction.
I also had a look at Seculines website and the item isn't listed, strange..... because Wex Photographic said it was a new product line. All this..... and all Pentax had to do was to put a nice little thread into the top of the shutter release and I could have used my cabled shutter release,..... Just heard back from Wex, The Seculine IR20 IS NOT an infra red remote control, regardless of what the website states, they told me all it does was to remotely open the live view, .... for which purpose I have absolutely no idea.
So they reccomended I go for a Seculine Twin 1-R3 UT
Seculine Twin 1 R3 Universal Remote (7415) - Wex Photographic I may look around and see if I can get it a little cheaper, good thing is that the nice sales person said it does have a B setting on it.
I'm also going to see if I can look inside the front of the k-x with a magnifying glass to see if I can see the dirt.
Also Just1MoreDave,
"SR automatically disabled in remote mode, useful and sensible but easy to forget" sorry for the noobness but do you mean "Shutter Release" SR?
Thanks guys...
sadsack