Canon 5D v 7D
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- tedvandell0
Vincent has done pretty well for himself and has done some nice work.
Check http://www.hurlbutvisuals.com for a less biased view who is also making some very nice looking stuff.
I wouldn't say never. I would like to see HD out via the HDMI though.
- tedvandell0
Actually Quack it's a matter of the increased sensor size that give it the increased depth of field .
In most cases it is the lens but not this time.- as an owner of a 5d and xti, i can plainly say you're all toolsquack
- The circle of confusion is different because of the sensor size.tedvandell
- sequoia0
"This test doesn’t have any images so in some places you simply have to take my word for it."
Thanks but no thanks.
- vaxorcist0
try this test:
put camera on tripod
aim at chair turned 45 degrees sideways, 4 feet from camera
shoot 50mm F1.8 lens at F1.8 on 7D focus on closest part of chair
shoot 85mm F1.8 lens at F1.8 on 5D focus on closest part of chair
compare images in computer- better yet, make sure said chair is in low light so iris is wide opentedvandell
- F1.8... you can shoot at very high shutter speed and low ISO in most light....vaxorcist
- that's why it says shoot lens at F1.8vaxorcist
- quack0
the camera isn't the factor, it's your relative position to the subject that causes this. if you had a full frame you could be closer, if you had a crop sensor you have to step back.
two cameras, same distance, same lens, same aperture, same bokeh
BUT the crop sensor image will of course be cropped.
don't associate it with the camera, when it's positioning
- please refer back to your own link regarding circle of confusion. That changes on the size and pixel count of the sensor.tedvandell
- there's no confusion i'm a 5 yr professionalquack
- 5 years impressive, I've only been doing it for 43 years.tedvandell
- jaylarson0
FYI: 1.6 x 50 = 80
- which meams a 50mm lens on a crop sensor has the same crop as an 80mm on a full framequack
- which means wide shots better on 5Dtedvandell
- it's all positioning, not the camera, as i saidquack
- living up to that moniker eh?tedvandell
- sequoia0
"5D (full sensor size) – even though it has larger sensor I find it only marginally more light sensitive."
LOL - what?!?
you seem to have some odd ideas about how cameras/optics work. this blog post should be deleted/removed until you back it up with some examples, cause as it stands this is nothing more than opinion.
- pr20
for quack and other confused souls:
So even if the circle of confusion (the blurry stuff) are of the same size on 7D and 5D the view changes - namely on 7D it's more "zoomed in" when at the same focal lenght (here 70mm) so to get the same view we need to zoom out (to about 43mm in this case) at which point the circles of confusion get smaller - meaning 7D has more DOF.
- Good example,
would have been nice if you had focused on something in the mid ground so you could see the bokah behind the subject.tedvandell - the bokahtedvandell
- this example shows if you shrink the 7d to match its sensor size it matches the center of the 5d photoquack
- just like i said it wouldquack
- Good example,
- user_00120
and the t2i?
- i would assume anything that goes for the 7d goes for the t2i also since they use the same sensorbigtrickagain
- svenreed0
true hans, however in order to equally match the too cameras, or planes a 7d will require wider lenses.
all in all a 5d or full frame camera will give you the most range out of your glass, considering that the ef line was built for 35mm planes
- tedvandell0
Difference in Circle of confusion between 7D and 5D
5D Mark II 0.030
7D 0.019
http://www.dofmaster.com/digital…
- inteliboy0
feedback loop going on here...
- quack0
As sensor size increases, the depth of field will decrease for a given aperture (when filling the frame with a subject of the same size and distance). This is because larger sensors require one to get closer to their subject, or to use a longer focal length in order to fill the frame with that subject. This means that one has to use progressively smaller aperture sizes in order to maintain the same depth of field on larger sensors. The following calculator predicts the required aperture and focal length in order to achieve the same depth of field (while maintaining perspective).
kindly fuck off
http://www.cambridgeincolour.com…
its position, not the sensor- Clearly the second sentence states sensor size is part of the equation.tedvandell
- inteliboy0
^ Yes but, to get that focal length on a full frame you'd use a ~100mm, and therefore get an even more shallower DOF. It's fkng plain clear logic. To argue otherwise = do not know their shit.
- quack0
bigtrickagain, ive been asking around on this.
all signs point to position making the difference, not the sensor.
if you frame a crop sensor to match that of a full frame sensor the camera proximity to the subject and other back elements is different. so of course there will be differences in bokeh effect
however if you mount a lens then swap bodes, bokeh remains the same as the image becomes cropped because proximity has remained- You just don't know what your talking about. The number of pixel on the full frame sensor changes the Circle of Confusion.tedvandell
- Circle of Confusion. Just like it changes the magnification on lenses between full frame and 2/3 frame sensor.tedvandell
- http://www.qbn.com/t…
i'm glad you've backtracked enough to make some sense againbigtrickagain - wrong, as you're cropping to zoom basically and not getting the nice DOF of the actual focal length.inteliboy
- quack0
but whateva, we don't pay or employ each other ;)