People talk about shallow DOF -- like in a portrait -- because digital P&S cameras aren't able to do this. Personally, I think the advantage of an SLR over a digicam is being able to control DOF. ( Well, manual focus, AF speed, ISO, and all that ... but I'm trying to stay on topic! )
I think you'll probably have to use a wide lens ( for FOV, not for DOF ), and smallish apertures, like f/11 to f/16. Then you should be able to make photos like these:
--People talk about shallow DOF -- like in a portrait -- because
digital P&S cameras aren't able to do this. Personally, I think
the advantage of an SLR over a digicam is being able to control
DOF. ( Well, manual focus, AF speed, ISO, and all that ... but I'm
trying to stay on topic! )
I think you'll probably have to use a wide lens ( for FOV, not for
DOF ), and smallish apertures, like f/11 to f/16. Then you should
be able to make photos like these:
http://valhallaphotos.com/html/Galleries/LandscapeGalleries.htm
Deep DOF is easy to achieve by stopping down the lens further (use Av mode, or the "landscape" scene mode). With the 300D, F14 - F18 on almost any lens will give you what you want. Most digicams have large DOF, and have a hard time acheiving shallow DOF because of their small sensor sizes.
Pat
--People talk about shallow DOF -- like in a portrait -- because
digital P&S cameras aren't able to do this. Personally, I think
the advantage of an SLR over a digicam is being able to control
DOF. ( Well, manual focus, AF speed, ISO, and all that ... but I'm
trying to stay on topic! )
I think you'll probably have to use a wide lens ( for FOV, not for
DOF ), and smallish apertures, like f/11 to f/16. Then you should
be able to make photos like these:
http://valhallaphotos.com/html/Galleries/LandscapeGalleries.htm
Pat Regan
All you need to do is compare the sensor sizes and the factor of the difference is multiplied by the fstop to give equivilence. Example.
You will find maximum depth of field on this camera with standard 35mm lenses to be far far less than consumer digitals with their tiny sensors and lenses. Consumer digitals for all practical purposes are pretty much in focus in outside light from maybe three feet or less to infinity. You surely aren't going to experience that with the Rebel. At 18mm it will be pretty deep, though. You shouldn't have to worry about landscapes having the tree out there fifty feet in sharp focus while the ones on the hill back there blurry. Many lenses have depth of field scales on them, take a look at some of them.
You'll achieve wide depth of field on a 300D at a much narrower aperture than on a teensy-sensor point 'n' shoot, and thus will require longer shutter speeds, so it's more important to use a tripod and remote release (or self-timer) when doing landscapes.
--
... because you will probably achieve the same result with f/6.7 on your 707.
.. certainly not! Lens just produse an image circle, with DOF set depended of aperture and distance to subject. So - no mattter WHAT PART of that image circle was taken - 24X36mm or 22.7X15.1mm - the DOF should be the same... and ...exept aperture - SOFT Portrait or Tele lenses - they will give you wide DOF but if you use SHARP wide-normal lenes - DOF will be narrowed .. all that - no matter of WHERE you will place an image - on 35mm film or on 300D sensor... wich will take just a SMALLER PART if it. Also, as I understand, all ZOOM lenses not as good for sharp focus as fixed focal length lenses...
In calculating depth of field, you need to consider the degree of enlargement of the image - a cropped image would have to be enlarged more to produce a print of the same size as the uncropped image, so it would show less DOF.
Then you framed the images incorrectly. Normally you don't shoot 35mm with plans to crop out 1.6 FOV crop, you use the whole frame.
So what you are saying is that if the cmos was e.g 100Mpix, then the DOF would be much wider/bigger?
Thanks.
Pat
--People talk about shallow DOF -- like in a portrait -- because
digital P&S cameras aren't able to do this. Personally, I think
the advantage of an SLR over a digicam is being able to control
DOF. ( Well, manual focus, AF speed, ISO, and all that ... but I'm
trying to stay on topic! )
I think you'll probably have to use a wide lens ( for FOV, not for
DOF ), and smallish apertures, like f/11 to f/16. Then you should
be able to make photos like these:
http://valhallaphotos.com/html/Galleries/LandscapeGalleries.htm
Pat Regan
