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Comment by Lubbyman posted on Solenoid identifying at 13/11/2022 - 11:08
Steve
Comment by Lubbyman posted on Pentax A*200 Macro at SRS at 12/11/2022 - 09:01

And I seem to have stumbled on one reason for slight wobble: everything is fixed to a desk which is on a carpet on floorboards, so the desk itself isn't a rigid fixture. Nothing I can do about that apart from be very, very careful.... or install a concrete floor in the spare bedroom .
Steve
Comment by Lubbyman posted on What's your latest acquisition? at 10/11/2022 - 14:51
Like you, I don't dare touch anything once it's set up for a shot, except for adjusting position between shots for a stack. Each shot is triggered by wireless remote with 3-sec delay. Live view with HDMI output to PC with big screen (also on the desk) means I don't have to go near the camera - or even move - to see what's on its display.
To be honest, I'm not sure whether the slight wobble is something to be concerned about or not. If it can be induced by shutter movement then it is. If it can't be then it won't affect the picture so it isn't a concern. It would be nice if the K3 had electronic shutter so no chance of shutter-induced motion, but as far as I can see it doesn't (please don't tell me that the K3III has it.....). So there's some investigation to be done. It should keep me occupied for a while during the dark, autumn evenings .
Steve
Comment by Lubbyman posted on What's your latest acquisition? at 10/11/2022 - 11:07
Steve
Comment by Lubbyman posted on Pentax KF at 10/11/2022 - 10:14
The bellows had its (their?) first outing today. The Laowa 25mm x2.5-5 macro was attached at full 5x magnification and f4. The aim was to see how far the lens could be pushed with bellows and to find out where there might be problems with my current macro rig. A pin was therefore positioned in front of the lens. An LED light and reflector were added without any thought for artistic effect. A set of 22 shots were taken, moving the back standard (with camera attached) slightly between shots. And here is the focus-stacked result. Approx 9x magnification (width of pinhead on sensor/true width of pinhead). Not the best picture ever produced, but it shows promise and is not the mass of diffraction-blur that I was half expecting.

And the problems? Only one so far. What seemed rock solid at around 1x magnification is not rock solid at 9x - it's close but could do better. So another challenge to be overcome!
Steve
Comment by Lubbyman posted on What's your latest acquisition? at 09/11/2022 - 21:34
I have to use a camera trap to see mine. They emerge after dark and raid the bird feeders. Some have even learned to flip the lid of the nut feeder to get inside - so much easier than nibbling a nut through wire mesh.
Steve
Comment by Lubbyman posted on More garden visitors at 09/11/2022 - 09:00
Steve
Comment by Lubbyman posted on Superglue II at 08/11/2022 - 16:17
yes I'm alive and kicking
Steve
Comment by Lubbyman posted on Another pointless thread at 07/11/2022 - 13:14


Really must get my sensible head back on.
Steve