I purchased the Samyang 24mm f1.4 for my 6D for specifically night photography. I won't go into how amazing this lens is at night... I've since discovered that this lens produces fabulous images in other situations and I've been using it to capture interesting and closeup shots of my kids, flowers, etc. I simply just love the "feel" of the photos captured with this lens. The only downfall is the total absence of focus confirmation and I've been investigating some ways to remedy this problem.
Currently, I am having to shoot in live-view which, although this is what I do with all may lenses when mounted on a tripod for landscape work, I am finding very cumbersome and slow and difficult to frame when shooting handheld.
I have another vintage lens for which I have a chipped adapter and I get a reasonable focus confirm when wide open and/or in bright conditions but focus confirmation becomes flaky stopped down to f11 and beyond or in darker conditions. I did not program the chip, nor do I know if its possible for this chip. I don't think it's a genuine Euro Dandelion.
I can see me using the Samyang a lot more than I do now if I had a fairly accurate focus confirmation (or a better focusing screen?)
I am not sure if I should get a good chip and program it or a focusing screen. There is a lot of incomplete and unreliable information about using both approaches on the web; When programmed, the chip will work well at a one focal length (OK, my lens is a prime) but also at a single, most used aperture?? (Not so good) Programming seems like a complex task that requires taking the lens off multiple times setting nobs and dials and firing of shots in specific patterns. (does not sound intuitive) I don't think I want to go trough all that every time I want to shoot handheld using a different aperture. (is this what I need to do or will programming it once be sufficient)
Focusing screen seems like a another possibility but; I don't know how this even works (why would this be better for manual lenses? Is it a split prism type of thing that comes together with focus?), viewer will be much darker with slower lenses, installation seems OK on the 6D but tricky on 5D bodies, 24mm may be too wide...
What other alternatives are available?
This long winded question basically boils down to: programmable focus confirm chip or focusing screen or something else.