On Fri, 14 Mar 2008 23:41:01 GMT, Ray Paseur
<Ray.Paseur@[EMAIL PROTECTED]
> wrote:
>Steven Green <steven.green30@[EMAIL PROTECTED]
> wrote in
>news:3TCCj.1028$dq2.934@[EMAIL PROTECTED]
>
>> I am interested in a digital SLR for landscapes, especially wide angle
>> photography.
>>
>> I see lots of lens reviews for various cameras, but what I am looking
>> for is something that compares them using angle of view rather than
>> 25mm etc.
>>
>> I am trying to decide if I really want a FF sensor or something
>> smaller, OK I want a FF sensor, but I guess I am trying to decide if
>> bigger is better.
>>
>> Is there a comparison of 12mp smaller format camera/lens with a 12mp
>> full frame sensor at various angles of view? Is there something
>> inherently better about bigger lenses and sensors? I think I read that
>> a bigger sensor has less noise, but is there anything better about the
>> lenses?
>>
>> Thanks,
>>
>> Steve
>>
>
>Steve: I've done some landscape wide-angle work and gotten good results
>with the Canon 5D and the 17-40mm zoom. There is a 16-35 zoom but much
>more expensive. I've also made panoramas from stitched together
>vertical shots made with the 5D and a 50mm. Mount the camera on a
>ballhead and rotate the camera around a nodal point. If you do this,
>you have to shoot in manual to achieve the same exposure for all the
>images that will be stitched together.
I have not been able to do stitching to simulate ultrawide coverage.
When you try to do this, the stitching program has to distort the
individual shots, and this makes them impossible to join.
Example: you want 18mm coverage but only have a 35mm lens (all 35mm
equiv.). The 35mm gives a horizontal angle of view of 54.5 deg. If
you take 4 shots, that will give adequate overlap for the final pic,
which has a 90 deg angle of view.
But each of the 4 pics has to be stretched really a lot out to the
corners, and now they won't fit together.
This has been my experience. If you know better, pls let me know the
secret.
Archibald
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