Does what you want and it's cheap too

Although making the cable release for a Pentax K10D/100D or K20D/200D is a simple matter of wiring a switch to a mobile phone headphone jack, I couldn't be bothered when I found this cheap but effective piece of kit. It appears to be robust, reliable and the cable is, I think, longer than that of the Pentax model, costing twice as much.

Also, this device scores over the Pentax infra red remote control in that the shutter can be locked open or, using the lock and multiple shooting, one can leave the camera to take shot after shot without intervention. Both are really useful for astronomical photography where long exposures or stacks of many shorter ones bring out faint objects in the sky.

I have withheld one star as the customary protest against inappropriate shipping charges (£4.99 for a £7.99 item weighing little more than a feather) but it still works out as a good buy at a shade under £13.

Very Impressed

I ordered this hood as the lens was ordered a few days before and wanted the two to work together. The hood arrived within two days and was the genuine article. No grey imports that some sellers try to pass off.
The lens still hasnt arrived so that shows the speed of this company.

Great service, thank you. Gary

FROM: OGUZ EREL...I HAVE NIKON D50 AND IT IS PERFECT WITH HOYA 52 INFRARED 72

Hoya 52 Infrared R72 generates excellent Infrared pictures..Quality is very good..I have Nikon D50..It makes great ir photos with this filter.. Also Nikon D50 autofocus works perfectly with Hoya Infrared 72.. The colour of this filter is very dark red..looks like black..if you look at the viewfinder you see nothing.. just it's black..An exposure adjusment between +1 / +3 is necessary for good histogram value.. Please use tripod, it is essential with this filter because of long shutter speed as much as 3 second by f11 or f16 values.I recommend remote control but self timer also is ok on the tripod. this filter has 720nm wavelenght..You will be very happy with it.. it worths the money you spend..
OGUZ EREL NORFOLK UK

Works well

I thought his was very cheap and bought it without realising it was not Olympus, but a version. Anyway it works as it should, focusing and taking the picture and is considerably cheaper than the official accessory. It is pretty much a requirement if you intend to take shots in poor lighting or when steadiness is a necessity with the E520, for which I bought it, as it does not have a cable release screwthread. You can buy with confidence and don't be put off by the chinese instructions: just plug it in at the back and it is ready to go.