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 p.58 #10 · Official: Canon Announces the EOS 6D Mark II | |
Kolbasz wrote:
Do I sell my lenses, get new ones with the 80d and be ok. Or, do what I planned and go 6d2?
I think you just sit back, have a couple cold ones and let the dust settle. 
I have been holding for a new FF for years (shooting the Kodak SLR/C), then picked up the 80D last year and have been very pleased with it. The IQ for me is very nice, and for those who do want base ISO DR, it is also very nice.
For me, the 80D lacks in two areas:
1) the obvious APS-C crop sensor size cuts my 16-35/4L IS down at the knees to roughly 25mm is as wide as I go for FOV.
2) Noise climbs with you as you climb the ISO scale faster than FF. At base ISO, it lifts pretty clean ... but, when you need the higher ISO for the SS in low light, it comes for the ride.
To address item 1), the options are either A) FF or B) wider glass
To address item 2), the option is FF (or different crop with bigger pixels, but that likly knocks down the base ISO DR)
Now ... as previously noted. The 80D has a base ISO of 80 (from its rated 100), as does the 5D4 (iirc). In the case of the DR testing we've seen from the 6D2, the chart reveals that the 6D2 performs best at ISO 160. Interestingly enough, 160 is one stop diff from 80. The significance to that is that we are feeding the sensor 1/2 the light to achieve our exposure. If the sensor was rated for ISO 80 we would need to let in twice as much light for an equivalent exposure.
This brings me to the question regarding the image with the curves lift. Yes, that image is the .cr2 of the 6D2 from the Imaging Resource download. I downloaded it (passing through DPP to PS), hit with the curves as shown. Nothing else.
matthewsaville wrote:
Is that the 6D2?
Yes. 6D2
That shadow push appears *VERY* different than the DPR examples.
Hmmmm.
+1
I don't think your image is of the 6D2 sample ISO 100 CR2 file.
It's not.
The .cr2 is not the ISO 100 file. The .cr2 is the ISO 50 file.
Thus, letting in twice as much light ... well, lets in twice as much light.
In years past, my experience with the lower "false ISO" of Canon cameras was of little value / diff from shooting at the base ISO. Here, however the false ISO seems to be deriving significant benefit of the 2X photons.
So, it strikes me that (still early, yet) while we are crying foul that Canon did NOT lower the base ISO to accommodate more DR ... well, maybe they HAVE given us a different route for the option to attain the lower base ISO through the use of the lower ISO. Of course, this leaves me scratchin' my head a bit to the test graph that Bill showed where no real gain from using the lower ISO was of benefit.
All I do know for certain is the simplicity of ... I downloaded the file and ratcheted the curves to the high heavens. My perspective regarding the how / why ... seems pretty simple to me, feed 2X more photons, get better results. Starve 1/2X photons, get diff results.
As I've said before ... I'm not ready to throw the baby out with the bathwater just yet. I want to learn and understand what this camera CAN do ... moreover than bashing what it seemingly can't do from initial test data. That said, it seems that it can't have as good a DR with 1/2 the photons  , but first pass seems it can have more DR when you feed it 2X photons ... which essentially IS the same thing as shooting at ISO 80 (as its 80D brethren).
I've always been a low ISO junkie (for deep, rich dark & clean, not for lift) and never felt like the "Low" ISO aspect of my Canon's of yore held much benefit to that. This ISO 50 file from I-R gives me cause to pause that maybe things are different now. If the 6D2 provides for the ability to shoot high ISO as cleanly as has been noted, and with the flip of switch, get down to clean ISO 80 ... AND a weaker (possibly) AA filter. Well, that sounds just fine to me. 
Still early, and only a single data point, but I'm (cautiously) enthused by the prospects it might hint at.
NOTE: Makes me want to go check out the "low ISO" of my 80D now ... hmmm, ISO 40. 
Afterthought ... hmmm, did somehow passing through DPP > PS (.TIF) impact moreover than 2X photons at the lower ISO 50? Or, maybe a little of both?
(Just considering possible variables.)
On the note of Auto-ISO ... Oh, yeah ... I think this 6D2 is gonna absolutely ROCK shooting "M" or "Av" or "Tv" once you get it dialed in to your pref's.
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