I have seen the DAC (Digital APO Correction) work, although I haven't spent enough time with it to make it not work. The new distortion correction capability being discussed with the H3-D, also looks encouraging. What I've been told regarding these "corrections", is that due to the enhanced communication between sensor and lens, and the resulting exchange of capture data, including distance to subject, for example, DAC and Distortion Correction will perform better than, say Photoshop or another software solution like DXO, because of the difficulty in extracting all of the capture data that Flexcolor has available in the raw file.
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Steve,
Thanks for these interesting comments, as always.
This subject is very interesting.
- Phaseone claimed in the past the their back couldn't produce a DNG file because they RAW file contains some callibration information related to the characteristics of every single back,
- Some people interpreted the Nikon move as far as auto white balance "encryption" as being also related to some sort of callibration of the sensor,
- Now Hassy also claims that they are able to do things better than the competition thanks to "insider" information about the lens and back.
There are differences between these 3 cases, but there are also things in common, namely that a manufacturer has access to some information that provides them with an advantage compared to the competition, and that they claim that this information is technically difficult to share with other players (whether this is true or not).
It is obvious to me that there is some truth to their statement, but it is also obvious to me that they are trying to make use of that to sell more of their stuff instead of letting customers choose freely the best option for every single segment of the chain.
From a technical standpoint, it seems very possible to me to define standard interfaces between segments that would let a lens communicate its characteristics to the body/back, and a soft interface that would let a back/sensor com
municate its characteristics to a downstream conversion software on a PC.
However:
- Today, these interfaces do not exist, and it is therefore likely true that a closed system has the potential to deliver better performance in the short term,
- The photographic industry has a deeply closed system culture that starts with non compatible lens mounts and extends to basically every area of the field (SLR flash, accesories,...),
- Opening completely the chain to competition has the potential to leave us with a situation where only the intially dominant player survives in each niche,
- Besides a few photographers who care - and who are currently discussing on this board and on others, most photographers don't care much about this, and are in fact not informed about these issues,
- There is always a trade off between openess and performance. Stating that openess is always the best option is over-simplistic and does not address the real concerns of the players involved. A more ellaborate approach is needed to progress on this topic. The success of Apple is a good example of a player that is striving on top of a closed approach,
- Fully opened systems where customers shop themselves for components pause some issues in terms of liability and support - what happens when the components don't interact well? The PC model is probably an interesting one here - OEM assemble components and take responsability for the system as a whole. This could be what Rollei is headed towards. Leaf plays the role of the OEM for assembling its back with the camera, and takes responsability for possible problems,
All in all, we have been dreaming for a few years about openess for the first time in the history of photography in the niche MFDB segment, it isn't very surprising that our favourite manufacturers are trying to step back to the situation that we - photographers and customers - have been tolerating for decades...
Cheers,
Bernard