Haydn1971 said:
So having had the f2.0 135mm for a few weeks, I've really fell head over heals on the quality of images I'm getting from it on my trusty old 450D. There is a certain something about the photos that I can't put my finger on, the colour rendition maybe ? But I'm hooked and have a real desire to get a similar image quality from my other focal lengths.
Could I request a few suggestions from users of the f2.0 135mm on other lenses, thinking primarily about the 70-200mm L series and the 24-xx L series, but also the other classic primes. Budget ? I've not set one, it's more an upgrade plan over the next few years, my current lenses are listed in my signature. I also have no current plans to upgrade my camera just yet, maybe in a couple of years perhaps, but obviously currently working with a crop body.
Hmmm...so you started this "Thoughts on Primes" thread, but now you want thoughts on zooms and primes?
I really love the 135mm f/2L, especially for outdoor portraits (a bit long for indoor portraits on crop, but great for that on FF). Honestly, though - for most typical uses, the 70-200mm f/2.8L IS II does as well, with more versatility and IS as well (provided you can handle the additional weight and cost of the lens). I will say that personally, I found the 70-200mm focal range to be a bit awkward on APS-C - it was a little long for typical indoor use, but still too short (compared to my 100-400mm) when I needed reach. I like the 70-200mm much better on FF. The 135L is great for action shooting in poor light (school plays, dande recitals, high school basketball, etc.).
From an IQ standpoint, the 70-200 II is quite similar to the 135L - both are excellent and deliver rich, contrasty colors. The 24-70mm does as well; I find the performance of the 24-105mm f/4L IS to be a little less than the others just mentioned from an IQ standpoint, but I use it a lot because it's a great focal range and has IS. On APS-C, I'd really recommend the 17-55mm f/2.8 IS, but you have the 15-85mm already, which is in the same class (17-55 is analogous to 24-70, while 15-85 is analogous to 24-105, in terms of utility and IQ).
Which 70-300mm do you have? If it's the new L zoom, that may serve you just as well as the 70-200/2.8 II if you don't need the wide aperture. If it's the non-L version, the L zooms will offer a
big IQ boost.
One lens I'd consider is the 35mm f/1.4L - it would be a fast 'normal' prime on APS-C, and also delivers optical performance close to the 135L (less sharp in the corners, but similar color/contrast). On FF, it's a wonderful lens for shooting in dimmer light - I like it as an outdoor nighttime walkaround lens.
Hope some of that rambling helps...