Bayonet

@davev8 I wasn't thinking in focal length, I was thinking in AoV, precisely why the aperture size calculation I made is relevent in revealing that two f/1.2 lenses of equivalent AoV for different...

So you think as much light passes through a 19mm hole (23/1.2) as through a 29mm hole (35/1.2)?

The crop factor kills this for usability, unless you prefer telephoto perspectives. The best wide option in M-mount would be the Laowa 12-24mm f/5.6 for a 33-66mm f/16 equivalent, or for the...

Past Hasselblad XCD lenses have produced well defined sunstars even wide open. Could you try taking some at more normal apertures, which should reduce/eliminate the CFA flaring pattern?

I recommend getting the 45-100mm now and the new 20-35mm later. The 32-64mm overlaps with both too much for my taste, so I would avoid it.

What G2 versions? Only the 28-75 has a G2.

Where are you finding these rumours? What is wrong with the 70-180 that necessitates a G2 version?

At this point the Hubble's four cardinal spikes are so iconic that JWST's six plus two look odd to me.

@eit412608
There appear to be six main diffraction spikes, and two smaller spikes on either side, any other spikes you see are fainter, indicating that they are artifacts of the very rotation I am...

About time that Phase engineered a solution for tilt on their XT, I had a choice between an IQ4/XT or a Fuji GFX100, and Fuji's development announcement of a 30mm Tilt/Shift convinced me to go with...

Those are diffraction spikes, it says so in the article. My question was how they intend to fix the rotation of those spikes, as one can see that the spikes get cut off when JWST rotates to...

How are they going to fix the rotating diffraction spikes?

Looks out of focus. Infinity is almost never the correct focus distance, unless photographing stars. Also, why use LENR? 6 second exposures should not have much in the way of hot pixels.

This thread is so confused. I would have thought some of the more technically inclined users would have gotten to the heart of the matter by now, but failing that I will have to take a stab at ...

The Canon is also f7.1 on the long end, not f7.3. Lots of typos there.

From your review: "The hole is just below the ‘nodal point’ of the lens, meaning that rotating the lens assembly and attached camera will exhibit any parallax errors in captured images." Is this ...

Is the mount positioned on the lens such that horizontal rotation on a pano head would be around the nodal point of the lens? This would be ideal for shots such as that impressive interior pano of ...

What lens did you use? I can tell by the sunstar that it was not a Fuji lens.

The M mount APO-Lanthars have a completely different optical design from the E and Z mount versions to compensate for sensor stack differences. Adapting the M mount versions is possible, but the ...

I do question whether Tamron's use of the words "new formats" actually means different sensor sizes as dpreview seems to be assuming, or whether something was lost in translation. Four Thirds...