simonpg
Active Member
I currently have a CF 250mm Sonar f5.6 lens which I find is both a very useful focal length and that it produces superb images.
For the sake of convenience (eg weight in my bag etc), I have considered buying a 1.4x Mutar to give me extra reach.
However, putting relative cost aside, I wonder if I should just get a 350mm lens for reasons of overall image quality and have the benefit of 1 stop faster aperture.
If the image quality from the 1.4x Mutar is not too degrading then convenience would win the argument.
However, while IMHO an extender cannot be expected to provide 100% the same level of imaging performance, what is the real visible difference?
All such things are relative, so I suppose my decision is not so much about what will give the better result; rather, to what real degree is a CF 250mm Sonar + 1.4x Mutar a lesser quality image than a 350mm Sonar on its own?
I am not deciding on costs difference and widest aperture - just image quality.
I shoot trannies and film. I shoot mostly with a tripod using a 501cm and 503cw. I would shoot 350mm for landscapes and buildings. I print a maximum image size of say 40"x40".
Thanks.
For the sake of convenience (eg weight in my bag etc), I have considered buying a 1.4x Mutar to give me extra reach.
However, putting relative cost aside, I wonder if I should just get a 350mm lens for reasons of overall image quality and have the benefit of 1 stop faster aperture.
If the image quality from the 1.4x Mutar is not too degrading then convenience would win the argument.
However, while IMHO an extender cannot be expected to provide 100% the same level of imaging performance, what is the real visible difference?
All such things are relative, so I suppose my decision is not so much about what will give the better result; rather, to what real degree is a CF 250mm Sonar + 1.4x Mutar a lesser quality image than a 350mm Sonar on its own?
I am not deciding on costs difference and widest aperture - just image quality.
I shoot trannies and film. I shoot mostly with a tripod using a 501cm and 503cw. I would shoot 350mm for landscapes and buildings. I print a maximum image size of say 40"x40".
Thanks.