Originally posted by Adam Considering that the level of depth of the review in its current state is going to be more than adequate for most members, there are no official plans of testing this further.
I think that would be adequate for the AF comparison.
If you are referring to the "K-5 IIs vs K-5" comparisons, I would disagree. Others, not just me, commented that the K-5 shots look suspiciously soft. If you want a useful account of what the difference the "s" makes is, I believe you must validate that your K-5 shots were optimally sharp. They really look like the K-5 had an infinity focus problem with the particular FA* 85/1.4 lens it was paired with.
Originally posted by Adam It is curious, however, that the difference between the shots taken with the 77mm is smaller (this applies to other photos that were taken yesterday as well). Could it be that the 85mm has a significantly higher resolving power than the 77mm?
Previously you assumed that subject distance was the criterion (the farther away, the better the K-5 IIs).
Have you now observed that the lens makes a difference and that subject distance is not the deciding factor anymore?
This would corroborate my hypothesis about an infinity focus problem with the K-5 & FA* 85/1.4 combo.
The problem is not that the K-5 IIs shots aren't sharp enough with the FA 77/1.8. The problem is that the K-5 shots with the FA* 85/1.4 are too soft. No further tests with other lenses will change that. If you manage to create ideal conditions and make an optimally sharp short with the K-5, the K-5 IIs cannot create a sharper shot (after the K-5 shot has been capture-sharpened). Any detail, the K-5 IIs will add, will be artefacts. Both have the same sensor resolution and the blur from the AA-filter can be undone with deconvolution (if there is no further blur).
I did a quick search for resolution figures for the FA 77/1.8 and FA* 85/1.4 but didn't find anything for the latter yet. In any event, if the lenses are OK, they can both outresolve 16MP, so I wouldn't be looking for a difference in lens resolving power. It rather appears, that the K-5 & FA 77/1.8 combo is better at obtaining a good AF result.
Originally posted by Adam Are you planning on getting a IIs to do any testing on your own, by the way?
If you can arrange for a K-5 IIs to be sent to me, I'll put it through its paces, including an AF accuracy test with an Imatest analysis of sharpness using the ESF approach. This will reveal minute differences in AF accuracy.
You'll not only get technical data and shots, but also New Zealand fauna & flora shots. How does that sound?