alundeb wrote:
I just mean that for example landscape images can always benefit in resolution if you use a longer FL and stitch for panos. The strange thing is that this technique is never used to excuse poor resolving camera systems, while the HDR bracketing technique is used to excuse poor DR camera systems. When people want high resolution camera systems, they are considered as qualified and demanding photographers, but when people want high DR camera systems, they are considered bad photographers that don't know how to use a flash or exposure bracketing. There are numerous cases where HDR bracketing is impossible due to motion in the scene. ...Show more →
I don't think that digital DR is any worse than that of slide film (and probably a bit better), but it would be nice to have a couple of stops more latitude to accomodate extreme DR conditions.
I agree that HDR bracketing is impossible with moving subjects, unless the camera can fire off 2 or 3 bracketed shots in 1/1000 of a second or less.
alundeb wrote:
I just mean that for example landscape images can always benefit in resolution if you use a longer FL and stitch for panos. The strange thing is that this technique is never used to excuse poor resolving camera systems, while the HDR bracketing technique is used to excuse poor DR camera systems. When people want high resolution camera systems, they are considered as qualified and demanding photographers, but when people want high DR camera systems, they are considered bad photographers that don't know how to use a flash or exposure bracketing. There are numerous cases where HDR bracketing is impossible due to motion in the scene. ...Show more →
Gotcha... thanks for the heads-up on the technique.
When I'm referring to HDR bracketing, I usually think of static landscapes which could benefit from it. Certainly other types of scenes where there is no subject movement could benefit as well.
keithreeder wrote:
Again no problem at all, Stoffer - I'm just picking up on Brainiac's observation.
As you'd already pointed out, it was just a DR test - and a tough one too!
Yes - it's a very difficult scene that would challenge the DR of most digital cameras. The 7D actually does remarkably well. When I said it was overexposed, my point was that digital is more like slide film in that you can retrieve a lot out of the shadows, and consequently a technically correct exposure is one that narrowly avoids blowing the highlights in high contrast scenes. But of course, it is the photographer's choice whether she is more interested in applying her limited dynamic range to the shadows of a scene and blowing highlights, or applying it to the highlights and losing data in the shadows. Marginal reductions in dynamic range seem to be the only downside to higher density sensors, but that's not a given, and hopefully higher DR sensors will become more easily available as technology progresses.
It will be interesting as they come up with the software that can expose different parts of the sensor according to the exposure. The user then could dial in how much of an effect they wanted as a normal exposure for all parts of a scene isn't always natural or desired.
jamato8 wrote:
It will be interesting as they come up with the software that can expose different parts of the sensor according to the exposure. The user then could dial in how much of an effect they wanted as a normal exposure for all parts of a scene isn't always natural or desired.
Agreed! It should be possible! I've been wishing for that feature (or variants of it) for many years...
The photographer could theoretically "dial-in" the exact dynamic range that they wanted to capture from a given scene. I assume that means dynamically adjusting the gain/sensitivity of each photosite on the sensor die itself, or something like that?
A good friend and I attended an Canon 7D intro party at an Ottawa dealer yesterday.
What was good was to get to do the "touchy feely", the body is nicely weighted, feels very solid and (I have large hands) I like it better with the optional grip (not yet available in Canada - but coming soon they promise! )
I did get to click off a few, it's fast, and they were doing direct shoot and printing with no cleaning, NR, tweaking - just direct jpg to printer. The photo's were 13x19 ish in size, lovely, crisp, delightfull.
No we didn't pixel peep, no blathering on about banding, noise, button placement, movie FPS, colour, height or anything else, we just enjoyed the features, feel of it and the canon rep making the odd contradiction
They had a former news editor/ 20+ year photographer and although we expected him to regurgitate the canon "spiel" he'd learned by heart - we were most pleasantly surprised to get a short, to the point talk on what he liked, the fact that he was using 1 series and had always only used those high enders and how well this performed for a $2000 camera.
We were very happy to hear from the canon rep that for the AF system they dedicate 100% of one processor during that process. Does anyone know if the 1 series use one of the processors like this was as well??
Well my buddy bought a 7D and pre ordered the grip - he had a grin well into today, I suspect it may be there for some time to come..... and I don't blame him, it's a terrific body, kicks butt for a 2k camera - the only reason I didn't get one is I have 2 pieces of glass to come first _ ordering them tomorrow, I feel a grin starting......
Paul_R_Canada wrote:
We were very happy to hear from the canon rep that for the AF system they dedicate 100% of one processor during that process. Does anyone know if the 1 series use one of the processors like this was as well??
Yep, the 1D bodies have a dedicated AF processor, and the 7D is the first APS-C body to follow suit.
Thanks Keith - OT how do you do a reply with a cut of the post you want to reply to?
BOT (Back On Topic) I was at a Henry's ordering my 16-35L and 300LF4 Is (huge ) and speaking with the 20 something behind the counter we discusssed the 7D and movie banding - he said he'd found out that the banding in movie mode was caued by the shutter speed not being in sync (from a user selection) with the FPs setting, IE 30 fps and 1/30th, 1/60th of a second - works great, 24 fps and 1/30th, no sync and banding.
He'd said he'd tried this and it was true, I don't have a 7D,
(I appologise if this was previously mentioned, I've tried keeping up but this thread is getting large)
Anyway, has anyone here tried this and if not, can someone run a test and see if this is indeed the case, could it be this simple??
Paul_R_Canada wrote:
Thanks Keith - OT how do you do a reply with a cut of the post you want to reply to?
BOT (Back On Topic) I was at a Henry's ordering my 16-35L and 300LF4 Is (huge ) and speaking with the 20 something behind the counter we discusssed the 7D and movie banding - he said he'd found out that the banding in movie mode was caued by the shutter speed not being in sync (from a user selection) with the FPs setting, IE 30 fps and 1/30th, 1/60th of a second - works great, 24 fps and 1/30th, no sync and banding.
He'd said he'd tried this and it was true, I don't have a 7D,
(I appologise if this was previously mentioned, I've tried keeping up but this thread is getting large)
Anyway, has anyone here tried this and if not, can someone run a test and see if this is indeed the case, could it be this simple??
the right frame rate does solve banding due to indoor lightining, but that is unrelated to other forms of banding not sure what types the 7D gets in video, haven't used video on it too much yet and so far it has been noisy at super high iso but not banding
Paul_R_Canada wrote:
Thanks Keith - OT how do you do a reply with a cut of the post you want to reply to?
BOT (Back On Topic) I was at a Henry's ordering my 16-35L and 300LF4 Is (huge ) and speaking with the 20 something behind the counter we discusssed the 7D and movie banding - he said he'd found out that the banding in movie mode was caued by the shutter speed not being in sync (from a user selection) with the FPs setting, IE 30 fps and 1/30th, 1/60th of a second - works great, 24 fps and 1/30th, no sync and banding.
He'd said he'd tried this and it was true, I don't have a 7D,
(I appologise if this was previously mentioned, I've tried keeping up but this thread is getting large)
Anyway, has anyone here tried this and if not, can someone run a test and see if this is indeed the case, could it be this simple??
the right frame rate does solve banding due to indoor lightining, but that is unrelated to other forms of banding not sure what types the 7D gets in video, haven't used video on it too much yet and so far it has been noisy at super high iso but not banding
skibum5 wrote:
the right frame rate does solve banding due to indoor lightining, but that is unrelated to other forms of banding not sure what types the 7D gets in video, haven't used video on it too much yet and so far it has been noisy at super high iso but not banding
So, bronxbombers or skibum5: having read your never-ending bashing of the 7D sensor on your camera, do you plan to dump the 7D?
My copy has a great sensor (little low ISO banding, no mazing, excellent high ISO performance). But the AF sensor on it doesn't work reliably. Have you faced problems in this regard?
Some cameras have great imaging sensor but horrendous AF sensors, while others are just the opposite. Sogh
cameron12x wrote:
What is a "Franken camera," if I may ask?
There is a camera (experimental) that exposes each area correctly so even in extreme conditions you get an exposure that has compensated for everything and is evenly presented. Looks to be a few years off at this time, maybe.
On another topic, whilst I am pleased with my 7D so far, has anyone else found that they have accidentally turned the mode dial whilst operating the newly positioned ON/OFF switch? I recently found that I was taking pictures in P instead of AV/TV mode and am pretty sure I turned the dial when using the new switch.
Yes, with the power on/of, but more so just in rubbing against the mode dial while handling. It should be a little stiffer, or have some mechanism (pull up and turn?) to prevent resetting the mode.
)
I don't have a 7D, 
