After my switch to the Sony A7RIV the first lens that came with the camera was the Sony FE 24-105mm f/4.0G OSS lens. This lens has a fixed aperture of f/4 and a great range. From 24mm wide-angle to 35, 50, 85 and 105mm zoom. A fantastic lens to start with.
My second lens became the Sony FE 70-200mm f/4.0G OSS also f/4 for more zoom range and recently I added the Sony FE 12-24mm f/4.0G lens. So my total range now is between 12 to 200mm at full frame. But recently I also started using the crop mode of my Sony A7RIV which multiplies everything by a factor of 1.5 at the cost of resolution. The full frame photos are all 61 megapixels. In crop mode ‘only’ 26 megapixels are left, which is more than a great resolution to work with. Only one of my previous cameras had more resolution. No regrets there because I can work with a range between 18 and 300mm.
Many photographers start using primes with a wider aperture, like f/2.8 or f//1.4. This does come with at least a double price tag. Question is: can you see the difference between landscape photos made with f/2.8 or f/4. Nigel Danson has made a comparison between two popular lenses:
This is the exact reason for choosing my f/4 lenses as a start. Also a huge plus coming with these lenses is optical stabilization. The Sony FE 12-24mm f/2.8 GM brings more light but no stabilisation, more weight and more than a double price.
Another user I have been following on Youtube for a long time is Levi Allen. Levi chose to use Sony cameras and lenses for his Adventure filmmaking academy. Levi made a video about his lens choices, and guess what? Most of the lenses he uses are f/4.
Have you noticed the stabilization part which Levi added in his video? He does use a few GM lenses f/1.8 and both lenses do not have built in stabilization. The A7RIV does have active stabilization, but only for making photos and not in video mode. The A7IV and A7SIII have it in photo and video mode.
With experiences of my own, and others like Levi and Nigel I am convinced I made the right choices. In the future I have to make new decisions for other lenses with a wider aperture: f/2.8, f/1.8 or f/1.4 but for now the next choice could very well become the Sony FE 100-400mm f/4.5-5.6 GM OSS because that lens will add an extra amount of range to my kit, together with a 1.4x or 2x teleconver kit this lens will bring a range up to almost 600 and 800mm at f/5.6. For now building experience with my current kit is more important.