Canon 5D v 7D
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- sequoia0
regardless if quack is right or wrong the info that blog post is incomplete and needs proper examples to back up the claims.
- bigtrickagain0
oh quack. you are so wrong and everyone else is so provably right, but you can't admit it even when citing the same facts as everyone else. i may not have 43 years of experience like ted, and as a photographer i'd say i have only ~3 years of pro experience (so less than your "experience"), but what everyone else says is true - bigger camera = shallower depth of field, from my own experience and from scientific basis. kindly start thinking coherently and rationally, or i shall i have to paste the child-camel internet argument pic in this thread.
you poor thing.
- Beautiful work on your site bigtrickagaintedvandell
- thanks (:bigtrickagain
- 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
- tedvandell0
Difference in Circle of confusion between 7D and 5D
5D Mark II 0.030
7D 0.019
http://www.dofmaster.com/digital…
- 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,
- 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.
- 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
- 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
- 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
- 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.
- 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
- 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.
- vaxorcist0
Yes, EF-S lenses do fit on 7D, but I never use them....
RE: Depth of Field:
An 85mm F1.8 lens on a 5D has less depth of field than a 50mm F1.8 lens on a 7D, when both have a similar framing in the viewfinder. I have both lenses and I have full frame and cropped cameras.In theory, a 50mm F1.8 lens on each with have the same depth of field but different fields of view.
- tedvandell0
I think there is more than enough glass available to get the look you want from your 5D
- Yes, but it's also more expensive glass then for 7D.pr2
- why buy when it's cheap to rent.
lensrentals.comtedvandell
- pr20
Vincent Laforet is a photographer who became a marketing guy by now who got famous and now accepts tons of gear from companies to spills lots of well worded misinformation. So i wouldn't trust what he has to say.
You can do as you wish, but SD preview will NEVER be able to deliver reliable focus.
- quack0
full frame lenses won't hold and ef-s lens so in all honesty more lenses fit on the 7d as there is a specialty line that doesn't fit the full frame cameras
- tedvandell0
Cool to see this topic making it's way onto QBN
- tedvandell0
Seems like a pretty impressive list of professionals are achieving fine focus with either the LCD loupe or external monitor for these.
http://www.hurlbutvisuals.com
House season finale shot with all 5Ds
Also used extensively on last season of 24
check out Phillip Bloom and Vincent Laforet