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p.1 #9 · p.1 #9 · How does Canon DSLR body support alt lenses focusing? | |
As mentioned above, a good focus screen, live-view with magnification and live view with peaking (using Magic Lantern Firmware) are the best focusing aids for Canon bodies.
However, each have their pros and cons.
If I want to focus quickly (moving subjects) with a fast normalish to slight tele lens (50 - 100 mm) I get the best results with the Eg-s screen through the optical viewfinder. Peaking alone (on the A7 or the 5D II with magic lantern) is often not accurate enough and magnification is too slow and makes it difficult to frame your subject.
With slower and wider lenses (e.g. 35mm f3.4) I have a terrible time nailing focus with the OVF. In these situations, focus peaking is also often useless as too many pixels peak (regardless of setting). This is the realm of the focus magnification. Luckily, wide/stopped down often means landscape - so there's time to compose with LV.
With long tele lenses (e.g. 180mm-200mm) its a mixed bag for me. If I have a fast lens such as the Nikkor ED Ai-s 180 2.8, I focus with the OVF at 2.8 and then stop down to f4 I often get critical focus. With a slower lens wide open (such as the Vario-Sonnar 80-200 f4) I have a harder time with the EVF and I rely on focus magnification.
In very bright light (especially shooting against the sun) I have trouble seeing the EVF of my A7. No such trouble with the OVF of the 5D II.
I don't think there is a clear-cut answer as to whether the mirrorless cameras with their focus aids are more suited for MF or a DSLR with a bright, well adjusted focusing screen. It depends on focal length, lens speed, ambient light level as well as personal preference.
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