arbitrage wrote:
Photon, have you tried just pushing the AF selection button (one next to the * button) to quickly get all to light up. I've found this to work for me. Don't get me wrong, I agree and discussed at length in the older threads all about the different problems and options. Back in those threads from a couple weeks ago, I also tried to help people understand that the only type of fix could be firmware that would allow the lights to be on at different times. I got really frustrated with people thinking Canon would be able to change the entire LCD system and go back to the permanently etched in LED like on the 5D2. I guess since I spent the last 2 years with the 7D I just never saw it as a problem....Show more →
Pushing another button to just light up the focus point is just a work around. Canon should fix this issue so we don't have to dance around the limitations that should not exist in a camera costing $3500. If you think having to push extra buttons all the time just to see what you are focusing on is OK...good for you...but please don't think it is OK for everyone. Shots will be missed or misfocused as action happens during an event. This needs to be fixed period...
Canon is aware of this issue and they are working on a fix, they are not denying anything. For now just don't use the LCD backlight with long exposures.
speedmaster20d wrote:
Canon is aware of this issue and they are working on a fix, they are not denying anything. For now just don't use the LCD backlight with long exposures.
Who on earth would?? If I use the light it is to quickly check my settings or make a change to one of them. I don't have the light on during metering, the light goes out in a few seconds. And anyone trying to meter at night is crazy anyways. Use LiveView, that is what it is good at. Then you can change settings right on the back LCD instead. This is the most stupid issue I've ever read about.
How do you feel about it Arash? I know you are a highly scientific/technically knowledgeable guy, do you see any real life problem with this in real shooting situations? I've yet to see anyone come up with one.
arbitrage wrote:
Who on earth would?? If I use the light it is to quickly check my settings or make a change to one of them. I don't have the light on during metering, the light goes out in a few seconds. And anyone trying to meter at night is crazy anyways. Use LiveView, that is what it is good at. Then you can change settings right on the back LCD instead. This is the most stupid issue I've ever read about.
How do you feel about it Arash? I know you are a highly scientific/technically knowledgeable guy, do you see any real life problem with this in real shooting situations? I've yet to see anyone come up with one....Show more →
Obviously Canon thought there was enough of an issue that it warrants holding up camera shipment which directly hits revenue and even the possibility of a recall. Maybe there is another issue that has been discovered and the metering issue is just a smoke screen. This is not a light decision by Canon and does affect their bottom line.
arbitrage wrote:
Who on earth would?? If I use the light it is to quickly check my settings or make a change to one of them. I don't have the light on during metering, the light goes out in a few seconds. And anyone trying to meter at night is crazy anyways. Use LiveView, that is what it is good at. Then you can change settings right on the back LCD instead. This is the most stupid issue I've ever read about.
How do you feel about it Arash? I know you are a highly scientific/technically knowledgeable guy, do you see any real life problem with this in real shooting situations? I've yet to see anyone come up with one....Show more →
You just don't get it. It's a design flaw. It's not supposed to be like that. Do you still remember the famous INTEL FDIV bug? Some said it will only appear once in decades, but pentium was still recalled.
arbitrage wrote:
Who on earth would?? If I use the light it is to quickly check my settings or make a change to one of them. I don't have the light on during metering, the light goes out in a few seconds. And anyone trying to meter at night is crazy anyways. Use LiveView, that is what it is good at. Then you can change settings right on the back LCD instead. This is the most stupid issue I've ever read about.
How do you feel about it Arash? I know you are a highly scientific/technically knowledgeable guy, do you see any real life problem with this in real shooting situations? I've yet to see anyone come up with one....Show more →
Hi, I don't really shoot super long exposures so I haven't encountered this problem in the 30 seconds or so night shots that I have taken so far. I also use rear camera's LCD instead of top LCD panel...
chez wrote:
This is not a light decision by Canon and does affect their bottom line.
Exactly.....Canon is a big business, and a profitable one at that, and they obviously know the product they designed and built........which means they do only those things that they feel they must or should do, because they have determined that any alternate course of action would affect their business more adversely.
it seems to me that when shooting in lighting that poor you are probably on a tripod and needing to eventually go to M mode exposure much of the time, if the initial quick ballpark Av reading is an extra 2/3 stops off it might waste an extra shot but that doesn't seem like that big of deal, if you use Av mode it might be I guess, but don't most people use liveview shooting for this sort of stuff these days 99% of the time? even just for perfect 10x zoom focus and to realtime see exposure historgram and look on screen?
i mean i'm sure there is some legit scenario, but they seem a bit hard to think of
phuang3 wrote:
You just don't get it. It's a design flaw. It's not supposed to be like that. Do you still remember the famous INTEL FDIV bug? Some said it will only appear once in decades, but pentium was still recalled.
When you can permanently "fix" the phenomenon with a piece of black gaffer's tape, it is ABSOLUTELY NOT A 'DESIGN' FLAW. Seriously, if they had to redesign the circuitry it would be a design flaw, but adding some material to cover the back side of an LED is akin to having to add a missing ground lead.
Has anyone seen any evidence that this "phenomenon" has any effect on the 5D3's light meter at light levels of Ev 0 and above? All the tests I've seen showing the phenomenon seem to be at around Ev -4 -- which is well below the meter's published operating range of Ev 0 to 20.
So, according to Canon, it would seem that the meter is unreliable and shouldn't be used below Ev 0. Why then should I be concerned that an inherently unreliable meter reading could be affected by the lcd backlight?
timbop wrote:
When you can permanently "fix" the phenomenon with a piece of black gaffer's tape, it is ABSOLUTELY NOT A 'DESIGN' FLAW. Seriously, if they had to redesign the circuitry it would be a design flaw, but adding some material to cover the back side of an LED is akin to having to add a missing ground lead.
My father-in-law had a car where the check engine light would come on and go off from time to time. He eventually "fixed" the issue by putting black tape over the indicator light.
Canon may know more than they are caring to share. If offered the opportunity to send in their cameras for an update 5D Mkiii owners would be silly to not take advantage of the offer. Canon would not be doing this just for giggles.
timbop wrote:
When you can permanently "fix" the phenomenon with a piece of black gaffer's tape, it is ABSOLUTELY NOT A 'DESIGN' FLAW.
+1 Open a camera up Its full of bits of black tape for light sealing and other types of insulation.
Even with modern electronics and our reliance on barely understood quantum mechanics, gaffer tape is still a fact of life.
Did you know that just before the rebels took out the second death star, an imperial cruiser was inbound with a massive roll of gaffer to seal up the perimeter, just in case. It was a close call. The empire was pretty pissed about that. There actually was a product recall for the first death star but unfortunately someone threw away the original shipping carton. No one had the balls to tell Vader so they just said "we have analysed their plans lord vader..." etc etc. If vader had have looked at his emails more often he would have seen a product advisory statement clearly stating the the death star needed to be mailed back asap so the inside of the perimeter trench could be 'reinforced'.
So you see, today , tomorrow, yesterday & even in a galaxy far far away, gaffer is still ubiquitous.
morganb4 wrote:
+1 Open a camera up Its full of bits of black tape for light sealing and other types of insulation.
Even with modern electronics and our reliance on barely understood quantum mechanics, gaffer tape is still a fact of life.
Did you know that just before the rebels took out the second death star, an imperial cruiser was inbound with a massive roll of gaffer to seal up the perimeter, just in case. It was a close call. The empire was pretty pissed about that. There actually was a product recall for the first death star but unfortunately someone threw away the original shipping carton. No one had the balls to tell Vader so they just said "we have analysed their plans lord vader..." etc etc. If vader had have looked at his emails more often he would have seen a product advisory statement clearly stating the the death star needed to be mailed back asap so the inside of the perimeter trench could be 'reinforced'.
So you see, today , tomorrow, yesterday & even in a galaxy far far away, gaffer is still ubiquitous....Show more →
If you're gonna seal any perimeters you need to be using duct tape... and if they had used duct tape in the 5D III we would not be having these discussions. Gaffer is fine for handling what gets through, duct keeps it from coming through in the first place...
Our lifes must be somehow boring, that we keep running a thread like this.
By the way: As far as I see, Darth Vader was kept together by a whole bunch of gaffer tape rolls. Would not be wrong to add some further dark(ness) power to that fascinating camera body.
Just for your information.
I have a colleague that just bought a 5dmk3 and heard about the"light leak".
Since photographing is his only hobby(and I mean ONLY),he went ahead and
tested his cameras.
He has, 30D,40D, and 5dmk3.
The only one that did not "leak" is the 30d.
That being said,he also said it's a ridiculous test and means absolutely nothing
in real photo taking conditions as it would never affect the meter reading.
As a reference......you can check his skill level.... http://danielo.zenfolio.com/
Product Advisories
To Users of the Canon EOS 5D Mark III Digital SLR Camera
Thank you for using Canon products.
The phenomenon described below has been confirmed when using the Canon EOS 5D Mark III Digital SLR Camera.
Canon is now examining the countermeasures and once the countermeasures are decided, we will post the information on our Web site.
Phenomenon
In extremely dark environments, if the LCD panel illuminates, the displayed exposure value may change as a result of the AE sensor’s detection of light from the LCD panel.
Affected Product
Canon EOS 5D Mark III Digital SLR Camera
Support
Once the preparations are complete, we will be making an announcement on our Web site.
This information is for residents of the United States and Puerto Rico only. If you do not reside in the USA or Puerto Rico, please contact the Canon Customer Support Center in your region.
Please register the EOS 5D Mark III. By registering, we will be able to notify you via email when service updates are available. If you already registered, please ensure you are opted-in to receive the notification.
Thank you,
Customer Support Operations
Canon U.S.A., Inc
Contact Information for Inquiries
Canon Customer Support Center
Phone: 1-800-OK-CANON
1-800-652-2666
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For additional support options: www.usa.canon.com/support
timbop wrote:
When you can permanently "fix" the phenomenon with a piece of black gaffer's tape, it is ABSOLUTELY NOT A 'DESIGN' FLAW. Seriously, if they had to redesign the circuitry it would be a design flaw, but adding some material to cover the back side of an LED is akin to having to add a missing ground lead.
Are you saying that using a duct tape on a brand new 747's oil tank to stop leaking is not a design flaw?
phuang3 wrote:
Are you saying that using a duct tape on a brand new 747's oil tank to stop leaking is not a design flaw?
A little thick on the hyperbole don't you think? We are talking an ABSOLUTELY preventable minor concern that does not cause an explosion - we're talking a 1/3 stop shift in a meter reading when shooting a lens cap or night sky. Considering that metering in general has an error margin of at least that much depending on the reflectance/color of the subject in the first place, this is by far the most minor of concerns raised by anyone who has used the camera. As I have mentioned before there are 3 ways to avoid the "problem" altogether, ALL of which are better techniques in the first place:.
1. Shoot in MANUAL (duh)
2. Use the back LCD when making adjustments
3. wait the 3 seconds for the top LCD lamp to go out before metering
