Archived posting to the Leica Users Group, 2007/08/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]FRANK DERNIE <frank.dernie@btinternet.com> wote: > >If it were to use the rangefinder windows it would >-have- to be where the rangefinder patch is, and >there's the rub. I am sure all Leica M users are used >to selecting which part of the image contained within >the rangefinder patch is the bit they wish to be in >focus and focussing accordingly. The af sensor would >not be able to do that - any more than it can on my >Canon in fact. > I've been sitting on my hands while following this sub-thread because it's more about rangefinder focussing than SLR... or is it? The discussion of AF accuracy, placement of the focussing patch and needless added complexity applies to SLR cameras as well as to the rangefinder. It seems that the fussiness, inaccuracy and complexity of AF have been accepted for the SLR while it has not been for the rangefinder. I agree with Harrison and Frank (no surprise) that the M doesn't need AF, and I also believe that except for very limited circumstances a camera with a top-quality SLR viewfinder like the SL's has no need for AF. On the SL a 560mm lens with 1.4x extender (effective aperture f/9.5) is a snap to focus, likewise the 90/2, 100/2.8, 60/2.8, 280/4... slower wides are a bit fussier but zone focus and DOF covers most situations where you'd have to work quickly, just like on a rangefinder caemra... and how many AF systems work reliably at f/9.5? On the SL I nail the focus 90% of the time regrdless of lighting or lens aperture, with the R8 I depend much more on bracketing focus and digital's low cost of mistakes. With the R4 I depend on good light and stopping down for DOF. It's my contention that AF's popularity is a direct result of manufacturers, by building cameras with merely adequate viewfinders, inadvertantly conditioning their customers to believe that manual focus is nessesarily difficult. How many M users are willing to give up a high-quality viewfinder for the sake of a focus confirmation light? Doug Herr Birdman of Sacramento http://www.wildlightphoto.com