Originally posted by tibbitts lenses that seemed adequate with my K100 didn't make the grade on my K-5
Fair enough but the K100 has a CCD, and the K-5 has CMOS. There are strengths and weaknesses to each.
Any lens produces its best results when paired with a sensor upon which every light-sensitive element captures light in the same moment and where minimal light is lost between those elements. Is it possible to reduce the MP setting on a K-5 to gain an equal comparison of the two technologies? (I will post later with my findings on K3 vs K10 vs DL2)
Originally posted by tibbitts Probably a magnifier would help too, at the sacrifice of being able to see all of the image area (for some eyeglass wearer especially.)
The greater the magnification the more the eye needs to be distanced from the glass. I find the Pentax x1.2 magnifier is a good compromise because its a small magnification and a sizeable pad, but I would like to try some bigger magnifications because I wear spectacles that bump into small viewfinders.
---------- Post added 02-24-21 at 02:17 AM ----------
Originally posted by UncleVanya Read about circles of confusion.
With almost every DSLR, tweaking the MF will generate a reassuring sound and flash a red square in the viewfinder - they call these features AF points, but they serve as a digital substitute for a physical microprism in MF mode. Like a mouse click, these features provide an assistive feedback to confirm we have achieved something.
I have four Pentax cameras. One of them is an *ist DL2, which is a later 6MP camera that displays no AF points in MF modes; using a vanilla DL2 without upgraded viewfinder requires extra squinting and more effort to focus because tiny variations in sharpness and softness over time, without a reference point, messes with human perception. I sometimes look way, rub my eyes, and try again. I am pretty sure that using a vanilla DL2 for a whole day would give me a headache.
The desire to assist the photographer find their desired focus is why 1970s SLR makers added a microprism. Adding one of those to a DL2 transforms the camera.