thw2 wrote:
Because Imaging Resource needs to replace their studio light bulbs. There are other examples on the web which show the 7D sensitivity is the same as the 5D2 etc. I was once worried like you, so how I know you feel.
Except that the 5DII "cooks the books" in terms of ISO too. Maybe that's not the right term. I think "corrects the ISO underrating in previous Canon DSLRs" is more appropriate
All I know... To get same exposure between my 5D2 and 1D3, my 1D3 needs about a 1/3 stop of ISO boost to match at same ap/ss... Granted, while shooting in the field, I don't have the same lens on both bodies, but it's pretty evident when looking through my NHL shots that the same settings between the two bodies do not yield the same exposure.
Just thought I'd throw that out there since it was brought up. I won't claim to have any explanations about "cooking ISOs", etc.. Just real world experience.
Yohan Pamudji wrote:
Except that the 5DII "cooks the books" in terms of ISO too. Maybe that's not the right term. I think "corrects the ISO underrating in previous Canon DSLRs" is more appropriate
That "correction" as Canon calls it was done before the 5D2 came out. The Rebel XT or XTi if I'm not mistaken.
EDIT: It was the XTi/400D.
The only two bodies I can compare are the 5D2 and 5D and I've already concluded that there is a difference of between 1/6 and 1/3 stop. Or, to put it another way, a shot done at ISO 100, f/8, and 1/100 second on the 5D would appear almost the same as an image taken at ISO 125, f/8, and 1/100 on the 5D2. The 5D2 with 1/3 of a stop higher ISO would be very slightly brighter, though it's difficult to compare exactly since the contrast curves are also slightly different.
apdieb wrote:
All I know... To get same exposure between my 5D2 and 1D3, my 1D3 needs about a 1/3 stop of ISO boost to match at same ap/ss... Granted, while shooting in the field, I don't have the same lens on both bodies, but it's pretty evident when looking through my NHL shots that the same settings between the two bodies do not yield the same exposure.
Just thought I'd throw that out there since it was brought up. I won't claim to have any explanations about "cooking ISOs", etc.. Just real world experience.
my experience with same lens on the same soccer field at night is that the 20D, for a given ISO, could use faster shutter for same apparent output, compared to the 50D compared to the 5D2 compared to the 40D.
Looking at Simon's racing pics makes me wish I could have had my 7D in hand this past weekend for the SCCA National Run Offs. It would have been a fun place to wring it out a little.
YetiMan = also hoping his Amazon preorder comes through soon.
garyvot wrote:
In terms of metering, I've found the 5D2 (and 5D before it) seem much better to me than the 40D or 50D. The 5-series metering seems to average the exposures and better protect the highlights. The xxD models I've used seem more heavily center-weighted and also seem to frequently overexpose.
theSuede wrote:
I'm sorry to rain on your parade, but the 5D2 does the same thing. It over-inflates it's ISO-ratings, maybe for marketing reasons - we don't know.
Oh, no, what I mean to say is that as long as 7D ISO sensitivity is the same as the recent batch of Canon cameras such as the 5D2, 50D etc etc, it's alright with me. I have no intention of comparing it to other brand names.
Anyway, there are different ways of defining ISO sensitivity, hence, the DPReview article on sense and sensitivity.
Per several comments from folks waiting for their Amazon pre-orders, I'm a member of that club too ... status hasn't changed since I took this screen grab four days ago ... :-(
I just picked mine up and the thrill of the purchase was dampened a little by the simple fact that I wanted to take a shot in the store with central point autofocus before I left. Now, I'm no pro, but it took my "salesman", who is an experienced photographer and me about 10 minutes to first fail, then read the manual to get a central point autofocus set. There's a learning curve to go along with this new fancy autofocus. A price I'm willing to pay if it's what I think it is, but jheeeeez.
This will be motivation to get my on-line payment thing figured out, so I can finally join FM and be able to upload pics.
canonical wrote:
I guarantee that within about 6 mos you will see a bunch of 7D's for sale here as everybody jumps for "the best next thing". All of this hootin' and hollerin' and most of you haven't even seen one yet.....let alone actually used one. Is this a joke or what? If you really are making a living with your images and then do this kind of thing, I hope you are making better business decisions in other areas of your lives....!
There are a lot of us who are upgrading from significantly older bodies (I own a 20D for example). So, there is a LOT for us to cheer about without even touching the camera.
I assume you're familiar with previous Canon bodies, and the very incremental improvements we've seen from body-to-body. This camera is just a bit different from the xxD series. It's a bigger jump, for a variety of reasons (and you should know what they are, or become educated about them). There's a lot of wanderlust here, and it's all good.
I doubt that Canon missed the boat with this one, but I'll know for sure in a couple of weeks when I will have spent some time with it.
canonical wrote:
I guarantee that within about 6 mos you will see a bunch of 7D's for sale here as everybody jumps for "the best next thing". All of this hootin' and hollerin' and most of you haven't even seen one yet.....let alone actually used one. Is this a joke or what? If you really are making a living with your images and then do this kind of thing, I hope you are making better business decisions in other areas of your lives....!
So what is your point canonical ? You seem to frequently post snotty messages about people buying new gear? What is your issue?
canonical wrote:
I guarantee that within about 6 mos you will see a bunch of 7D's for sale here as everybody jumps for "the best next thing". All of this hootin' and hollerin' and most of you haven't even seen one yet.....let alone actually used one. Is this a joke or what? If you really are making a living with your images and then do this kind of thing, I hope you are making better business decisions in other areas of your lives....!
Maybe because their business decisions have been good ones they can experiment with new "toys" which allows them to make "other areas of their (sic) lives" richer. I say them since I have been retired for 23 years after 36 years of making good business decisions. At my age I take advantage of any new innovation and enjoy the hell out of it and if it ends up on ebay... good luck to the buyer.
If they got the cash.... more power to em... and if they fill the need to sell, bring em to FM and I will gladly take them off their hands like I have so many times before
Ransome wrote:
I just picked mine up and the thrill of the purchase was dampened a little by the simple fact that I wanted to take a shot in the store with central point autofocus before I left. Now, I'm no pro, but it took my "salesman", who is an experienced photographer and me about 10 minutes to first fail, then read the manual to get a central point autofocus set. There's a learning curve to go along with this new fancy autofocus. A price I'm willing to pay if it's what I think it is, but jheeeeez.
This will be motivation to get my on-line payment thing figured out, so I can finally join FM and be able to upload pics.
I've got a quick snap of the cat, but to be honest I was pleasantly surprised at the result. I really wasn't expecting the high ISO to be this good. ISO 6400 will definitely be usable for me. Straight jpeg from camera with standard settings, although I did manage to get the high ISO noise reduction disabled in camera. It may not be better than a 5DII, but I think it might top my original 5D! To me the noise has more of a film grain like appearance than any other camera I have used. Now if the BIF testing can produce the same results with respect to focus I'll be delighted!
