I just got a 28mm Contax G on ebay from Japan. It came with the correct +.5m PCX filter and rings. Am trying to decide whether to keep it. Sharpness stopped down seems not an issue on an a7r4. I love the form factor and the lack of distortion.
What lightroom correction profile are folks using for this lens? Zeiss Loxia 25 or Zeiss ZM Biogon T withh distortion set to zero, or something else?
I am getting the green/cyan drift on the edges, and finally figured out how to correctly do the flat field correction and zap it out, but I dislike the "clunkiness" as an earlier poster wrote, of having to create a separate folder and go through this process. I don't understand how Sean Reid uses the lightroom sliders to only correct for the color shift without making a custom mask with the gradient tool.
I just got a 28mm Contax G on ebay from Japan. It came with the correct +.5m PCX filter and rings. Am trying to decide whether to keep it. Sharpness stopped down seems not an issue on an a7r4. I love the form factor and the lack of distortion.
On my copy, with the PCX filter, (which visually appears to me to be installed correctly, with the more bulbous side facing the lens), I seem to get more vignetting on one side than the other. I confirmed by shooting a white board with the PCX filter removed, without the filter the vignette is more centered on the frame. Does this mean my PCX filter is decentered? I have some of the rubber rings referenced earlier in this thread on the way, but don't have a spanner wrench handy.
What lightroom correction profile are folks using for this lens? I am getting the green/cyan drift on the edges, and finally figured out how to correctly do the flat field correction and zap it out, but I dislike the "clunkiness" as an earlier poster wrote, of having to create a separate folder and go through this process. I don't understand how Sean Reid uses the lightroom sliders to only correct for the color shift without making a custom mask with the gradient tool.
