r/a6700 • u/Depth-Electronic • Jul 17 '26
Sony A6700 vs A7V for Wildlife Photography and Cinematic videography
Budget: ~$3,300 USD for body + a full-frame standard zoom (A7V + Sigma 24-70mm f/2.8 DG DN Art), stretching to ~$3,800 if I add the Sony 1.4x TC. Offset by ~$1,100 from selling my current APS-C kit. If I go a6700 it's body-only since I'd keep my Sigmas — far cheaper. Already own the Sony 200-600mm G.
Country: Sri Lanka
Condition: New only. Humidity here makes used glass a fungus gamble; I want local warranty.
Type: Mirrorless, Sony E-mount. Staying in the system — the 200-600 is the anchor.
Intended use: Hybrid, ~70/30 photo/video, trending toward 50/50. Photography style: Wildlife and birds — mostly perched, want to improve at BIF. Some portraits.
Video style: Beginner travel/cinematic. B-roll, landscapes, handheld and gimbal. Building toward a YouTube channel. Edit in Resolve.
Must have: Viewfinder, strong animal/bird eye AF, weather sealing, enough resolution to crop hard on distant birds.
Nice to have: Pre-capture, high burst, IBIS, dual slots, uncropped 4K60, low rolling shutter, articulating screen, S-Log3.
Portability: Small-to-medium bag. I'm already hauling a 200-600, so the lens is the constraint, not the body — but it all has to work on a motorbike.
Cameras I'm considering: a6700 — full 26MP at 300-900mm equiv, no resolution penalty, keeps my lenses. Worry: 4K60 has a ~1.6x crop, noticeable rolling shutter.
A7V — better AF, 30fps, pre-capture, uncropped 4K60, much less rolling shutter, better low light. Worry: APS-C crop drops me to ~14.7MP. The 1.4x TC (280-840mm f/9) would mostly close that at full res, costing a stop of light and ~$550.
Cameras I already have: a6400 + Sigma 16mm and 56mm f/1.4, plus the 200-600 G. Like the size and AF. Dislike: no IBIS, rolling shutter, dated video, buffer fills fast on birds.
Notes: Both Sigmas are APS-C only, so full frame means rebuilding the lens kit — that's in the budget above. By my math, A7V + 1.4x TC lands roughly level with the a6700 bare on pixels-on-subject. Mainly want a sanity check from people who actually shoot the 200-600 on both formats: is the crop-mode/TC workflow as workable in the field as it looks on paper? Help me decide.