Click-click-click-click-click-click-cli ... 6.5P ... Canon announces the 40D!

Nicey

mikkowilson said:
Canon has officially announced the EOS-40D DSLR camera...

http://gizmodo.com/gadgets/it.s-off...ires-65-frames-per-second-at-101mp-291133.php


http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&fcategoryid=139&modelid=15653


10.1MP at 6.5fps! wow! :shocked:


- Mikko
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I really want this camera. I wonder what impact the D!GiC III will have on the noise at ISO 3200? On the consumer cameras it reduced the noise way too much. And I have yet to see what it has done for the EOS 1D Mark III.

And I'll take the G9 as a more convenient camera to take everywhere.
 
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Always the same problem.The sensor is too small. You can't have 35mm DOF.
The only Canon i would buy is the 1D or 5D
 
so I'm guessing that this is much better than the $1500 30D that I just bought last week? btw, that's now gonna get returned to get the new and improved model :)
 
I mean depth of field. There are wonderful photos taken with no DOF, but shallow 35mm DOF it' s an option i can't live without.


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It's a question of sensor size. The larger the sensor size, the shallower the DOF (in same conditions)



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Dude... honestly you have no idea what you are talking about.

Even without a full frame you can get extremely shallow depth of field.
 
Yes, , but not at the same conditions. You have to force the conditions in order to have the same DOF. I don't want to change lens, go farther from the subject to obtain the same DOF but a flat, tele image. I know exactly what i'm talking about.
I create almost a 35mm DOF with my PD170 camcorder, but it's not possible if you don't have the space to go far from the subject.
 
To clarify my, you don't know what you're talking about here is an excerpt from http://www.the-digital-picture.com/Canon-Lenses/Field-of-View-Crop-Factor.aspx

Another difference has to do with Depth of Field (DOF). The acceptable DOF produced by a lens relates to the actual focal length, aperture setting, subject distance, circle of confusion and sensor size. While the size of the sensor affects DOF, the significant change from sensor size to sensor size is the distance from your subject required to get the same desired image framing. All other factors being equal, longer distance to the subject will result in greater acceptable DOF. So, as a generalization, using a higher FOVCF DSLR will yield more DOF in your similarly cropped pictures because you will be farther from the subject. Using a higher FOVCF will make it harder to blur the background and easier to keep/get the subject in focus. The amount of difference is about the same as the crop factor (1.3x, 1.6x). As focus distances approach infinity, this difference goes away. A good way to learn more about this topic is to plug your own numbers into the Depth of Field Calculator at DOFMaster.
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Specifically, you can easily get a shallow depth of field with a crop camera...

Now if you had said that you do not get 35mm equiv. with a crop camera that would be correct... but that isn't the question.
 
If you look at the DOF equation (go to a library), you'll notice that in that equation the focal length is squared, all other factors like sensor size, distance, CoC, magnification are not. Thus it is the focal length which mostly determines the DOF other things being equal. With small sensors small focal legths are used, with large sensors, longer focal lengths, as we need to keep the picture angles similar. THAT determines the DOF.
 
someday said:
Always the same problem.The sensor is too small. You can't have 35mm DOF.
The only Canon i would buy is the 1D or 5D
Click to expand...

The 1D line (1D, Mark II, Mark II N, Mark III) is not full frame. They only have 1.3x crop factor.

The 1Ds line however has a larger sensor, but is not 35mm, it's closer to 36mm.

So there you have it, just the 5D.
 
Petrus said:
Thus it is the focal length which mostly determines the DOF other things being equal.
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And this is the wrong solution. I don't want my pictures to be flattened by long focal lens.
Iwant wider shots (35mm-50mm) to have shallow DOF. This is an extreme, yet wonderful situation (used in all high budget commercials), that needs f/1:4 or faster lenses and 35mm sensors. A full body person can be isolated from his near background.
 
Full frame = longer lens for the same field of view. Therefore, full frame = shalower DOF. You can throw equations around any way you like, but that's the reality, much the same as 35mm film having (much) shallower DOF than 1/3" video camera. With all things being equal (visually, not mathematically), larger frame allows shallower DOF.

I think you are both (all) right, just looking at things from different POV.
 
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