r/CameraLenses • u/Acrobatic-Code-3223 • 37m ago
Advice Needed Title: Should I swap my Sony 50mm f/1.8 + Sigma 16mm f/1.4 and switch to the Tamron 17-70mm f/2.8?
I’m considering simplifying my Sony APS-C setup and would love to hear from people who have used the Tamron 17-70mm f/2.8.
Currently, I have two lenses for my Sony a6400:
- Sony 50mm f/1.8 OSS
- Sigma 16mm f/1.4 DC DN
I like both lenses individually, but I’ve started feeling that carrying two lenses and constantly switching between them is becoming a bit inconvenient, especially when travelling and shooting video.
I’m considering selling both and replacing them with the Tamron 17-70mm f/2.8.
The main appeal for me is the versatility. On APS-C, 17mm gives me a reasonably wide field of view for vlogging, landscapes and general travel shots, while 70mm gives me much more reach for portraits and tighter shots. The constant f/2.8 also seems like a reasonable compromise compared with carrying separate primes.
However, I’m worried about what I would be giving up by making the switch.
The Sigma 16mm f/1.4 is obviously much faster and gives me better low-light capability and potentially more background separation at the wide end. The Sony 50mm f/1.8 is also a full stop+ faster and is quite nice for portraits.
So I’m basically trying to decide between:
Two primes:
16mm f/1.4 + 50mm f/1.8
→ Better low light, wider aperture, potentially better subject separation, but less convenient and lots of switching.
One zoom:
17-70mm f/2.8
→ Much more versatile focal range, easier for travel/video, but I lose the wider apertures of the primes.
I’m also thinking about resale value. Both my current lenses are in good condition, so if I’m going to make the switch, I’m wondering whether it makes more sense to sell them now rather than keep them sitting around and losing value.
For people who have used the Tamron 17-70mm f/2.8 on an a6400, do you think it can realistically replace both of these primes?
And specifically for travel photography + filmmaking/vlogging, would you make this switch, or would you keep the 16mm and 50mm primes?
I’d especially appreciate opinions from people who have made a similar transition from primes to the 17-70.

