Scribblings About Things
Capture One Pro Lens Profiles
When images are loaded or imported into Capture One Pro, lens profiles are automatically applied if they are available.
While the profiles made by the Capture One team are pretty accurate and work well, one shortcoming of using their profiles (or the Generic Pincushion/Generic Distortion profiles) is that any form of distortion correction will cause some pixel loss, so even if no resizing is done and the images are exported at full size, there is a chance that you will end up with images with slightly varying dimensions (depending on lens used and amount of distortion correction applied).
I have found that one way to circumvent this, if your camera body allows for it, is to use the “Manufacturer Profile” option, so even if distortion corrections are applied, the dimensions would remain the same.
Image Quality Differences Between Nikon Z6 and Z6II
OK so let me begin this post with a disclaimer: This is by no ways a scientific or technical post, but rather my personal thoughts and experience on the topic.
Onto the main topic - I feel that there is a difference in image quality between my Z6 and my Z6II. It’s subtle, but can be observed on quite a regular basis, with the Z6 giving ever so slightly sharper and more detailed images as compared to the Z6II.
I haven’t really seen anyone comment on this before, so thought I'd put my thoughts out to see if anyone feels the same way.
Now I remember when the original Z6/Z7 duo were released, the whole internet (OK exaggerated but you get the point) was up in arms regarding how bad the shadow banding was when you lifted exposure by 5-stops.
However when the Mark II's were out, most claimed that the issue was solved and shadow banding was not present, or if so, very negligible in most cases.
Personally when I got my Z6, the banding was the least of my concerns as I don’t jack up my exposure in post that much; on the contrary I was surprised how detailed and crisp my images were as compared to the higher MP D800 I was using prior, which I think is mainly due to the lack of AF misalignments and stabilization of my prime lenses with the Z bodies.
I’ve since added a Z6II (as well as a Z7, but let’s leave that out of the discussion today) to my kit as well, and after a year of using the Z6 and Z6II in tandem, I feel that the Z6II lacks just a little extra crisp that the Z6 is able to produce.
On paper they seem to be using identical sensors with the same number of PDAF sensors, running on the same generation processors (albeit with the Mark II having dual processors), but some circumstantial evidences got me thinking that something has changed between them.
Solving the problem of shadow banding problem could have been done via algorithmic interpolation, which means the raw files are slightly more “cooked” than the original Z6.
When Capture One Pro first supported Z6II's files, there was an issue with files being noisier than expected (which was addressed as incorrect noise handling and fixed in 15.1.0), which seems to suggest that the demosaicing algorithm is slightly different from the Z6.
Change of production facilities might have caused a change in the materials used for the AA filters and PDAF masking (note that I’m not saying one facility is better than the other, just being objective that a change in location would most probably mean a change in materials used)
Shutter mechanism seems different between the two bodies based on the sound they produce
Perhaps these small changes here and there might have led to some differences in image quality coming out from both cameras?
As I mentioned earlier this is not a technical post, just some thoughts based on my experiences, so there’s definitely a chance that I’m overthinking things and all this is just a weird concoction of jibberish conclusions.
On an ending note, just in case anyone's interested - yes the AA-filterless Z7 triumphs the Z6 hands down in terms of details and clarity, though I don’t own a Z7II (yet) to compare directly to.
Nikon 70-200mm f/2.8E vs Nikon Z 70-200mm f/2.8 S
Last year I came across a pretty good trade-in deal at my usual camera store for my 70-200 FL to upgrade to the Z 70-200mm f/2.8 S, so without hesitation I sold off the FL to them as I was more than happy to say goodbye to the FTZ adapter.
Not that the FTZ adapter was underperforming, or that the lens was not up to standard - it’s just that the added length and bulk from the FTZ adapter does make the Z6 slightly unwieldly, and also it does require a bit of a nudge to fit into my bag as well.
So yea, with the new Z lens, my set became leaner, fitting into my bag nicely, and handling was much improved as the overall weight balance and length of the set makes handholding much more comfortable.
I had been very happy and satisfied with my 70-200 FL as it does perform as expected, and I had made over 200,000 clicks on that lens. Until the day I parted with it, it was a phenomenal workhorse lens which I had created countless stunning images with; even more so when coupled with a Z body as front/back focusing issues inherent with DSLRs were no longer a concern.
Hearing that the Z lens performs even better than the FL, I was really looking forward to owning it and putting it through its paces.
However one thing that caught my attention when I first got the lens was that how its performance varied with subject distances; at close distances it performs as I had expected it to - sharp with plenty of details and contrast, whereas at medium to long distances, I find that the FL seemed to have better performance, especially for reproducing minute details.
I thought that it might just that I have not grown into the lens and perhaps I need to change my techniques a bit to get used to it, so I put that aside and just concentrated on using it as much as possible to learn more about its strengths, weaknesses and quirks.
But after 100,000 clicks or so on it, I am quite certain that my lens might have an issue with sharpness - it’s either decentered, or the VR unit is causing motion blur, or a mixture of everything.
Sigh, I should have trusted my gut feeling and exchanged it for another unit when the window was still open.
Guess I’m going to have to pay the service center a visit soon.
Nikon Z6 vs Z7 Colors
Most of my assignments shot under the various studios are done with the Z6 + Z6II combo, as the combination of cleaner high ISO images, higher AF sensitivity, and more manageable 24mp file sizes are the more crucial considerations.
However in my personal time (and the occasional odd assignments where high resolution files are needed) I use the Z7 quite frequently.
One thing that has always intrigued me is that the files coming out of the Z7 are richer in color and easier to post process to my taste, as compared to the Z6/Z6II, which usually have a hint of quirky magenta/red tint that I would have to remove.
Not that the Z6/Z6II are slouches; it’s just that I just have a much easier time dealing with the colors of the Z7 files.
While I know that they use totally different sensors, it’s still interesting that even within the same generation of cameras and boasting the same CPUs, the images produced are quite distinctly different.
Nikon Z 70-200mm f/2.8 S VR - Occasional Rare Glitch/Issue
Last October, I traded in my 70-200mm f/2.8E and FTZ adapter for this lens, and have been happy with its performance - it’s as sharp or sharper than my E lens, but with better bokeh rendering.
However last December, during one of my assignments, I had encountered a weird/rare glitch, where my image in the finder would be jumping all over the place, as though the VR system was having issues.
But after a couple power off/on cycles and zooming the lens, the issue seem to have disappeared and I continued shooting as usual.
While I can’t force a reproduction of this issue, it seems to pop up every now and then (say, on average once per 5000 shots or so?), usually when my lens is set to 70mm when I boot up the camera.
Just wanted to put this out here to see if anyone has encountered similar issues.