..you are basically referring to DSLR cameras that were released between February 2005 to August 2010.
The 6D and 70D are noticeably improved for low ISO pattern noise so my gripes are confined to Digic 4 SLR bodies. OTH, Digic 4 PowerShot G11 (& G12?) behave pretty well.
[..keep on blaming your tools, if it makes you feel better about your inability to use them properly.
If 20+ other Canon bodies (let's not even consider the Exmor sensored bodies), often used the same way, did not produce objectionable FPN when pushed then how can you conclude that's a user fault? The 7D is KNOWN to have stripey shadows with only a small push that you can even do in DPP. Too bad you don't have yours yet so you could provide a lens cap shot so we could see if it had stripes or not.
and crop from same slightly pushed file in DPP www.canonrumors.com/forum/index.php?topic=9770.msg176368#msg176368
..pattern noise has more to do with the general layout of the camera (pcb), the number of readout channels..
very true. I've identified image noise under some circumstances with my old 40D that seems to be directly related to electronic system noise, most likely an onboard voltage regulator. If I could clean that power supply up i'd have more useful 1600 and 3200 iso on that one.
Digic 4 is only fingered as being the processor in the most egregious DSLR FPN culprits, PowerShots G11 & 12 are Digic 4 and cleaner than the SLRs at base ISO.
People who found the fpn from the 5D MkII and 7D to be particularly problematic are the ones who tended to underexpose, which is outdated advice originally intended to preserve highlights from clipping..
I don't understand how that is outdated advice.
Keeping highlites just short of clipping is how to retain highlite detail; they're not being exposed as a midtone.
Push the rest up as desired, or even further, as in this example from my 60D which survived just fine with a manually exposed shot to retain cloud detail while pushing the rest up in post.www.canonrumors.com/forum/index.php?topic=8065.msg154889#msg154889
Well my reply still stands "Send me some RAW files, 7D and/or 5D MkII, I don't care, I'll even do another video on what I did to them."
I haven't forgotten. when I can make the time I'll prep a file for you to work on. I'd like to see if you can process the stripes out without losing detail. Likely will be one of the 7D sunset shots from link above.
.. have you noticed the cameras you get better results with are the ones programmed to look after people who don't know what they are doing? The bodies where user input is far more important you can't get results from. Now what does that say?
it says nothing conclusive. I generally shoot difficult scenes in manual exposure to retain highlite detail levels where I want them so how can an unused comsumer camera's AE features possibly matter?
tried it in DxO, selecting "prime" noise reduction mode and the banding vanished completely
I do have DxO 9 but haven't run any of the old stripey files thru it. I have seen improved results on some of my older hi ISO files that it did a nice job on. Thanks for letting me know it worked for you; I have some 5d2 files and 7d files I hope it can fix without excess time spent doing so.