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Comment by Algernon posted on Not a Fan of Pentax? at 21/04/2011 - 20:58
Opened a 35mm thick internal door so that I was looking at the thickness and face of the door at about 45deg. Had to move back to about 1.5 - 2m to get the thickness in the split image. The image lines up on the split on both sides of the thickness of the door, The distance will be 0.707 x 35 = 25mm approx. so the split screen can't be very accurate.
I also noticed how dim the MX screen is compared to the Super-A almost unusable inside the house, but the Super-A is very bright
I've another MX with a screen in it off the Limited Edition LX, I'll
have to see how that compares.
Comment by Algernon posted on Suggestions to Pentax at 21/04/2011 - 19:21
I've also posted this link before where they say focusing just isn't reliable by any means. All systems rely heavily on DOF.
When I've been testing lenses I've found the 2x Refconverter 'A' to be right about 1 shot in 4 at f/4 and below. I've posted this before.... this was focused using a 2x Refconverter 'A' MF and is right to the mm

I was doing some quick tests yesterday with a 50mm 'A' f/1.7 and 24-50mm 'A' f/4 just of a satellite dish using the green diamond to focus. It did seem that the Zoom was sharper than the Prime, but when I looked closer at the adjacent brickwork and some climbing roses the Zoom was focusing quite a bit in front and the prime quite a bit behind, so I'll have to repeat the test probably using an Eye-Fi card to check and adjust the focus for each shot. Very surprised though how good the Zoom is at f/4 and f/5.6 (better than a top prime) They were identical at f/8. The green diamond should be more accurate than any form of manual focusing because it's detecting an electric signal.
It would be nice if someone could actually do a proper test with a split screen?
Comment by Algernon posted on Suggestions to Pentax at 21/04/2011 - 18:22
I bought a K20 which was faulty and eventually exchanged for a K7 which was faulty which was exchanged for another K7 which I traded in for a K5 which was faulty and exchanged for another K5 which was faulty and will be exchanged for another K5.
Comment by Algernon posted on K5 number 3...? at 21/04/2011 - 11:18
I'm a bit concerned of what's happening to all the one's that have
been returned. If they sell them off as refurbs I wouldn't buy one
but at least we'd know what happened to them. I just hope that they
don't get sent out as NEW cameras
Comment by Algernon posted on K5 number 3...? at 21/04/2011 - 09:37
It's a lot easier than that to check a split screen. Put it on a tripod about 3 ft high. Focus on something vertical say a gap in a door/frame. Tilt the camera/tripod to the top of the door. If it still shows it's in focus..... throw it in the bin
I was thinking getting the distance to sensor, distance to screen exactly the same
You could also confirm this by focusing on a box about 1m away from the camera with the split screen and then moving the box 50mm backwards/forwards and it will probably still line up indicating that it's still in focus according to the split screen.
Comment by Algernon posted on Suggestions to Pentax at 21/04/2011 - 09:28
Comment by Algernon posted on K5 number 3...? at 21/04/2011 - 08:57


It went for £23 in the end. Can't help thinking he'd have got more if he'd been able to wind his attitude problem in!