BTW, I’m pretty sure you could do a circular crop in DT using a mask with the colorize module
I have an ImageMagick script to crop to a square (and, strangely, the image circle isn’t perfectly centered on the sensor (18px left and 7px high, on a 6000x4000 sensor)
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I’m intrigued how you got the last capture - did you use a remote release and lie the camera on the floor?
Looks like a cool way to create targets for Bevel Reflect Logo, Ofnuts. 
Hope you don’t mind a bit of play with one of your orbs, Ofnuts. Used a Tithonia flower extraction (Mexican sunflowers I grew a few years back; they came back for 4 seasons but finally they didn’t, sadly) and one of your orbs for this result.
Nice images! I am tempted to get one of these, but I don’t think the FOV will be as magnificient for micro 4/3.
I would also consider a mask that attenuates (eg -4EV) the perimeter of the circle, where the chromatic aberration is kind of distracting. I happen to like the circular photos very much.
At least for this specific lens, you apparently don’t get the full circle on m4/3 (it will be cropped a bit at top and bottom). So at least for me it would only make sense on APS-C.
(yes, I’m tempted as well :D)
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The same lens has an MFT version. The image circle is a bit smaller than the APS-C sensor of my camera. I don’t know if you get the full circle on MFT or if it is a bit cropped (so you would only have 180° AoV instead of 210). OTOH you need a very small camera to not have the grip in the field. I take these pictures with a R100, on my R7 the grip shows and I would have to crop to about 180° (I need to calibrate all this to have the actual numbers…)
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No… IIRC standing up(*). I have to use a handle and a remote otherwise my finger on the shutter would be in the circle.
(*) the perspective on the feet of the first pillars confirms this. Definitely shot from above (probably around 2m above ground)
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That’s valuable information. Makes sense for a >180° lens but I didn’t think about it before.
Neither did I. Fortunately I had recently acquired a smaller camera for other purposes… My only problem is that it was good enough for that purpose (slide duplication and document archiving) but is a bit lacking for this use (noisy sensor and lack of articulated screen).
Btw, let me plug a very nice accessory I used on most of the shots, it’s a combined tripod/handle with a built-in detachable bluetooth remote. For most shots the handle is closed, set at roughly 45°, and the remote is in the handle with the button under the thumb. Held at arm’s length in front of you, your feet are not in the shot.
When shooting ceilings, you set it on the floor (or a table) like this:
and walk away with the remote (yes, the R100 with the lens is very light).
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Nice…I too have one of those tripod/grips for my Canon R7. When my new lens arrives I will keep the setup in mind.
I don’t know which one you have, but I tried the JJC knock-off and the Canon, and the Canon is way better in the small details (in particular a much shorter response delay on the remote).
I have the genuine Canon Grip supplied as a bonus redemption with a microphone as well when I bought the R7.