Originally posted by rawr Aha. Interesting.
I know that the camera can optionally apply some CA correction to JPEG's under the 'Lens Correction' options menu. Pentax say these adjustments only apply to DA L, DA, D FA and only some FA lenses, and also don't work when teleconvertors are used. But I wonder if somewhere in the K-II/ K-IIs camera firmware it is still performing some CA correction to JPEGs, even if the option isn't set?
Nikon has been doing it for years for
lateral CA in the D700, D7000, D90 etc in a way that isn't dependent on lens brand or teleconvertor use.
Do K-5 IIs RAW's look the same as JPEGs when it comes to CA/PF?
Hi rawr,
It might be possible that the processor in the camera could be set up to suppress CA/PF. I suggested in my original post in this thread that it could either be the sensor or in camera processing that was responsible.I recall seeing a post where a user updated FW in his K01, and noticed that PF was greatly reduced with the same lens after the update. This might be a tweak that Ricoh/Pentax is adding somewhere in the processing chain, but I don't think, in this case, it's connected to the Lens Correction mode since I've never use Lens Correction in any of my cameras since it slows down the works too much..
The 1.7x AFA is an "F" series adapter, and has its own unique ID # within the Pentax Lens world. SR-equipped cameras recognize it and return to the last FL entered when it was mounted. The AFA cannot pass lens ID from the lens though as there is no Data pin on the lens side of the adapter. The only data that is transferred from the lens to the camera body is aperture info, which is automatically recalculated to indicate the 1.7x factor.
I can't answer for the K-5 IIs RAW images because I haven't gotten to trying RAW in this camera yet.
Scott