I found a great deal on the Sony 24–70mm f/2.8 GM II and I’m debating how it fits into my kit. Right now, I shoot with:
- Sony 20mm f/1.8
- Sigma 50mm f/1.4 (my favorite — definitely keeping this one)
- Sony 85mm f/1.8
The zoom would give me way more flexibility for travel and everyday use, while the Sigma 50mm still covers me for low light and shallow depth of field. That makes me wonder — should I sell the 85mm 1.8, maybe even the 20mm 1.8, or keep them for when I want something smaller and faster?
What would you do in my situation?
Also — when buying this lens used, besides testing it on my camera, is there anything else I should check?
Without knowing much of what or how you shoot, what strikes me most is that 20 to 50mm is a massive gap. If you also had say 24 and 35mm primes, or 28 and 40mm primes, then we could talk about primes versus zooms and f/4 versus f/2.8 versus f/2 or faster. But you have
no coverage between 20 and 50mm, and to me that would be unworkable / unacceptable. I think you need to buy something to plug the gap.
I love shooting with a 21+50 combo when I'm going after a minimalist setup... It's not my ideal spread (20/35/75 or 16/35/135 or some mix of that), but for some use cases you don't
need to cover or plug every gap IMO... Just comes down to shooting what you like/enjoy, as an enthusiast at least.
When I shoot primes I frequently carry them with a 2x focal length gap plan. 24/50/100. 16/35/85. 15/31/70 (on Pentax).
Yeah I've heard the 2x suggestion a lot, makes some sense when you start taking cropping leeway into account (1.5x is easy, 2x pushes it)... My combos have never been that neat but I don't fret much about it. On M4/3 I think my most frequent trio was 24/40/85 equivalent, the I realized I vastly prefer 20mm, even alongside 35 or 50... As a prime shooter I just don't mind a gap.
If I have the wrong lens on or if a crop takes a bit more of a toll, so what, I'm shooting for pleasure, no one is paying me to "get the shot". If I was a pro it'd be a different story...
I like that 21+50 combo because I like the unique things both lenses can do at their size (CV21/3.5 & TT50/1.4) and I'm not gonna suffer greatly if a shot would've looked better at 35mm (or 24 / 28 / 40 / 75 / 85 / 100 / etc.). It's a minimalist combo that scratches two itches for me and it's more enjoyable to carry all day at times than my ideal trio. It doesn't
have to "plug" XYZ hole, it's just what I enjoy shooting sometimes.
Photography isn't dam building or plumbery... Nor is it Pokemon, we don't gotta catch 'em all. (says the guy with a dozen lenses... heh)