Starting to get nervous ?

cunarder534 wrote in post #4192499
Not if Canon has had your body for a total of twenty business days. No luck on the exchange even and that was from a very reputable online dealer in New York with two letters.

I'm not sure I understand. Why in the world would anyone send their camera to Canon when they have the option to exchange it at the point of sale? That says nothing negative about the dealer, the camera or canon.

Thank you very much for the replies. However I am now not sure if I feel better or worse !

You hear about a lot of issues with almost any camera in the beginning because it's the time that the largest percent of people will be buying it at once. Also, your going to hear more negative results, rather than positive, because lets face it, people want to be vocal about their problems.

As for the people who don't have issues, we have nothing to complain about, so we are quiet. My 40D is a gem and has no issues whatsoever. Take it in stride. I think you'll be very pleased with your purchase.

John!!

Have I ever lied to you?



I'm not about to start over the 40D. It's just a great camera.

snappa wrote in post #4191973
I am beginning to worry a bit as I have ordered a 40D and I have read some very conflicting reports on here. I am a regular visitor here and realise that if something does go wrong the owners of the cameras do tend to shout the loudest !
Tales of having to return the camera, tales of trouble with the AF, tales of more or less everything are starting to bother me. I suspect I just need a bit of reassurance.
Helllllllllllllllp please.

The owner of my company just bought one.

He's owned the 10D and 20D, and currently also owns the 30D and the 5D.

He absolutely loves the 40D. He mentioned everything from better color, to the auto-ISO, to the "small RAW" (which I knew nothing about).

He mentioned something about having a "camera sale" because of his satisfaction with the 40D...

this thread kills me...lol

pre-worried

You are going to spend the first 30 days taking test pictures to see if you have supposed defects. Then you are going to convince yourself that you got them.

Don't put yourself through this. Cancel the order and wait for the next Canon upgrade.

fwiw....my 40D works just fine and I beat the **** out of it.

Snappa, Snappa, Snappa.... JUST BE EXCITED THAT YOUR GETTING A BRAND NEW CAMERA, AND STOP WORRYING!!! Seriously now, I was just like you are now. I had a 350D, and I wanted the 40D. After reading so many posts on here about problems with this camera, I was VERY nervous to get it. I said screw worrying, I'm just going to get it, and that's what I did. It is an AWESOME camera. You will love it. Give it a chance.

cunarder534 wrote in post #4192112
The best part they won't even look at any examples I bring in to prove it.

The issue really is your pictures are more about your ability (or lack there of) to take pictures and not really about the camera. Too many variables to consider.

The use calibrated lenses and test equipment to determine if your body is working properly. If it is within spec, than it may be an issue of being just on one of the spec, in combination with your particular lenses being just on the other side of the spec thereby having to far end divergent pieces of technology that just are not going to ever work well together.

Keith, Of course you have never lied to me. I really do believe you but I have probably been reading too much about this camera and fearing the worst !
S2000, I am going to do no such thing. I am planning no test shots and such is my knowledge of things digital I would not know if it was working properly or not ! But you`re probably right I should cancel the order and wait a while............LOL
Bbryan, You are absolutely right about this. I have pm`d Keith R a couple of times and he has told me how good it is and I really do believe him. So stand by Keith it should be arriving any day now !
Thanx everybody for your comments.

Wait till you get the camera in your hands and enjoy it. Many more people have been happy with the 40d I suspect than have had problems - of course those with problems are more likely to post about it. There are also a number of people knocking the 40d that have never so much as held one just adding to your fear.

Edit: Created a poll for 40d owners to state their happiness/disappointme​nt with the 40d here

My 40D is so good that it showed a slight autofocusing problem in my 70-300IS that my 30D simply didn't show at all.

Seems my 70-300IS is backfocusing ever so slightly. How do I know?

Because I shot the moon a few nights ago with my 40D. I have the EF-S focusing screen on my 40D, and that made it easy to very precisely focus the lens to pick up the maximum sharpness. There was a slight, but consistent, difference in sharpness between manually focused images and autofocused images.

I put the same lens on the 30D and tried the same experiment, and got equal sharpness between manual focusing and autofocusing.

How do I know the problem is with my lens and not my camera? Two reasons:

First, I have a 50mm f/1.8 mark I which I had sent off for recalibration, and both my 30D and 40d focus dead-on accurately with it -- on the focus test chart, the focus target is right smack in the middle of the focus field.

Second, I hooked the 70-300 up to both my 30D and 40D and shot the test target. The focus target was positioned in exactly the same location within the focus field on both cameras: within the focus field, but slightly towards the front. In other words, the center of the focus field was behind the focus target, which means the lens is backfocusing slightly.

It's not enough to notice on the 30D, but it's enough to notice on the 40D, because the 40D has a higher resolution.

I love my 40D.

Well I now have my 40D ! And I am very very happy with life at the moment. I had to ask Keith R a couple of things but the acid test comes tomorrow when I venture out with it for the first time.
I am fairly certain that this camera will, hopefully, not let me down. As I now go to work in the dark and get home in the dark, BST rules and stuff, I have not had a chance to try it properly but the shots I have taken so far look good.
I will post a shot as soon as I take one that is not my window, door etc.

hortonsl62 wrote in post #4192009
The odds that you'll get a defective camera are extremely low.

Relax.

We can do a little Six Sigma experiment from the data we have from Shawn's poll:

If you take the data in the focus issues poll as a representative sampling, you can calculate a process sigma.

Adding all the votes reporting 1) no problem or 2) reporting a problem, there are 108 units out of 125 not reporting "defects" (front/back or AI Servo problems), and 17 reporting a "defect". A process sigma calculation using this data yields a process sigma of 2.60. With a process sigma of 2.60, you have a theoretically, an 86.4% chance of receiving a camera with no problems, and a 13.6% chance of receiving a camera with focus problems. The potential buyer can decide if that is a chance that is acceptable to them.

It should be understood that this is not a very big sample for testing binomial statistics-based attribute data (the attribute being that the camera either has a defect, or it does not), so the confidence levels are not particularly high. If you would like to have 90% confidence, the chances are that the defect rate, in fact, could be as low as 5.9%, due to the sample size we are using.

For example, if we run a Power and Sample Size 1-proportion test in Minitab, assuming for a moment that our observed defect rate of 13.6% is real and we have a sample size of 125, with 90% condifence level you get:
Testing proportion = 0.136 (versus < 0.136)
Alpha = 0.05
Sample Size:125 Power:0.90 Alternative Proportion: 0.0586381

The alternative proportion value of .0586 means that, with our poll sample size, you do not have sufficient sampling power to reject the (null) hypothesis that a 5.9% rate of defects is any different statistically than the observed 13.6% reported defects.

FWIW, if this data was representative, a process sigma of 2.60 is nothing to write home to mother about.

*Bill wrote in post #4196487
You hear about a lot of issues with almost any camera in the beginning because it's the time that the largest percent of people will be buying it at once. Also, your going to hear more negative results, rather than positive, because lets face it, people want to be vocal about their problems.

As for the people who don't have issues, we have nothing to complain about, so we are quiet. My 40D is a gem and has no issues whatsoever. Take it in stride. I think you'll be very pleased with your purchase.

i don't recall the 20d or 30d having problems like this.

ed rader

Stephen Scharf wrote in post #4242055
It should be understood that this is not a very big sample for testing binomial statistics-based attribute data

No, it's a nonsensically small-to-the-point-of-utter-statistical-irrelevance sample to waste that much typing on.

Factor in the number of units so far sold worldwide compared to the number of internet-based complaints, then type some more.