RJSorensen
16th of March 2005 (Wed), 09:18
As a statement and or a question . . . I am not quite sure which this thread is,so I ask the members for help on and in understanding or clarifying the 'view' area of different Canon cameras with the above noted len(s) on different Canon bodies.
To save the typing fingers of the flamers . . . I know a EFS will not fit on a non-EFS camera. Only as of today DRebel(s) and the 20D.
I was reading a lens review this moring between a 18-55 'kit' lens and a 17-40 L lens. It seemed to me that on the DRebel that was being used, with the sensor size (1.6) of the DRebel that the photos shared were meant to be exactly the same but can not possibly be? The shots from the 17-40L were center cut due to the lens being made for a full frame camera vs. the 18-55 were full frame on the 1.6 crop camera. This lens being made for the crop factor.
So a lens test with these two lens can never be fair i.e. center cut and corner 100% crops because they will not show the same portion of the lens. Does this make sense to anyone?
As I understand it EFS lens are full frame on a 1.6 cameras wherel EF/ EFL lens only use the best/center view of the lens on a 1.6 crop camera.
So at best we can see the difference between cameras with these lenses . . . but can not judge the lens because of the different part of the lens used to capture the image on a full frame/film camera vs. the cropped value of a 1.3 or 1.6 body.
This means "L" lens are double LL on a 1.6 and L and a half on a 1.3 because they are using the sweet spot. But on the EFS lens, the 1.6 value is using the whole lens. Does this make sense?
Or have I taken in too much thin air in my time . . . thoughts and or comments please, just be nice. ;)
To save the typing fingers of the flamers . . . I know a EFS will not fit on a non-EFS camera. Only as of today DRebel(s) and the 20D.
I was reading a lens review this moring between a 18-55 'kit' lens and a 17-40 L lens. It seemed to me that on the DRebel that was being used, with the sensor size (1.6) of the DRebel that the photos shared were meant to be exactly the same but can not possibly be? The shots from the 17-40L were center cut due to the lens being made for a full frame camera vs. the 18-55 were full frame on the 1.6 crop camera. This lens being made for the crop factor.
So a lens test with these two lens can never be fair i.e. center cut and corner 100% crops because they will not show the same portion of the lens. Does this make sense to anyone?
As I understand it EFS lens are full frame on a 1.6 cameras wherel EF/ EFL lens only use the best/center view of the lens on a 1.6 crop camera.
So at best we can see the difference between cameras with these lenses . . . but can not judge the lens because of the different part of the lens used to capture the image on a full frame/film camera vs. the cropped value of a 1.3 or 1.6 body.
This means "L" lens are double LL on a 1.6 and L and a half on a 1.3 because they are using the sweet spot. But on the EFS lens, the 1.6 value is using the whole lens. Does this make sense?
Or have I taken in too much thin air in my time . . . thoughts and or comments please, just be nice. ;)