bkwaters wrote:
Fast primes are obviously beneficial for DOF control, such as in portrait photography. But is the “primes are sharper” argument still valid? With the ability of modern cameras to focus in low light and the effectiveness of noise reduction software, does the “primes are needed for low light” argument still hold?
I have been doing this as a pro for 50 years (yes I am 71). Early on, and for most of my career as a photojournalist we used primes with our Nikons, Canons and Leicas because of the better IQ.
But as optical designs got better and zooms got better with better IQ, faster focus, with faster max apertures we changed over to the convenience of zooms' range of focal lengths . Most pros nowadays will still have those special primes that we cant seem to live without, but for sure we also covet our versatile zooms and ALWAYS have one or two zooms with us at all times.
When I was on staff on newspapers and magazines, we always had access to the best prime long lenses like 300mm f2.8, 400mm f2.8, and 600mm f4 provided by our media outlets. Those modern versions of those lenses still reign tops, but at prices from $9000 USD to $13000, $14000 and more, these lenses are out of the budget reach of most hobbyists, unless they are very well-heeled.
Into their place for most are the superb long zooms from OEM makers and third-party lens makers. Great zooms are a great equalizer for most of us on tighter photo budgets, allowing more to make those shots that only expensive primes could make in the past.
And even better , the latest Sony 70-200mm f2.8 GMII zoom has now tested as sharp in MTF-standard sharpness tests as the best primes in those focal lengths, a first for zooms, and an amazing feat highlighting the major advances in optical design.
Fast Primes might still be a bit faster at f1.2, f1.4, and f2 and a bit sharper overall, but with modern cameras with great image sensors, with great dynamic range and high ISO and low light abilities, zooms at f2.8 and even f4 and higher are viable choices, and at a considerable savings over buying multiple primes.
Some examples:
1) A photo made with Nikon D1X and Nikon 300mm f2.8 Prime lens of wakeboarder Danny Harf winning the Gold Medal at the X-Games in Philadelphia.
2-4) Photos made with my Sony A1, and Sony 200-600mm f5.6-6.3 zoom lens on the Caribbean island of Sint Maarten/St. Martin. The Sony 200-600mm f5.6-6.3 zoom lens cost $2000 USD vs the $13000 cost of the Sony 600mm f4 GM prime lens.
First a Snowy Egret takes off from its water perch on the island of Sint Maarten/St. Martin, 319mm, ISO 1600, f6.3, 1/4000 sec. handheld.
Second, a Great White Egret bends its neck to clean its feathers. 591mm, ISO 1600, f6.3 , 1/2000 sec. handheld.
Third, a tight crop from the same shot taken at 591mm.
5) Sony A7RIV and prime 24mm f1.4 GM. Jade at sundown in the Nevada Desert, USA. 24mm ,f1.6, ISO 400, 1/160 sec., light only from headlights of two cars, with colored non-flammable smoke. The Sony 24mm f1.4 GM prime lens is $1400 USD.
6) Sony A7RIV and zoom Sigma Art 24-70mm f2.8 DG DN. Pro Model Dom, at sunset on Santa Monica Beach, California, USA. 24mm, ISO 200, f2.8, 1/40 sec., handheld, all natural light only. The Sigma Art 24-70mm f2.8 DG DN zoom lens is $1069 USD.
7) Sony A9, Sony 24-105mm f4 G OSS zoom lens. Environmental Scientist Brooke H., in a slot canyon near Upper Antelope Canyon, Navajo lands, Page, Arizona USA. 24mm, ISO 400, f4, 1/30 sec. handheld with natural light coming into the canyon. The Sony 24-105mm lens G OSS zoom lens which covers a wide range and is a great all-around single lens to use, is priced at $1298 USD. This shot was chosen as a Worldwide Photo of the Week, by Sony Alpha Photographers in 2021.
8) Sony A9, Sony 24-105mm f4 G OSS zoom lens. A local swimmer dives off a pier into the Caribbean sea on the island of Sint Maarten/St. Martin. 24mm, ISO 400, f5.6, 1/2000 sec. handheld, all natural light
9-10) Sony A1, Sony 200-600mm f5.6-6.3 zoom lens. Kids get pulled by fast speedboat on Brookings Lake, Manistee National Forest, Michigan, USA. 600mm, ISO 1000, f6.3, 1/2000 sec. handheld. These are about a 50% crop.
Click on download to see better image quality.
The point I am making as I have a mix of primes and zooms in my kit, I love my primes like my 24mm f1.4 GM, my Sigma Art 85mm f1.4 DG DN, and my 135mm f1.8 GM lenses. But if I ever have to go out with only a single lens ,I take one of my versatile zooms like my Tamron 17-28mm f2.8; my Sigma 24-70mm f2.8 DG DN; my Sony 24-105mm f4 G OSS; my Sony 70-200mm f2.8 GM; or my Sony 200-600mm f5.6-6.3 lens.
If you are starting out and outfitting your kit, IMHO start out with the best quality versatile zoom lens your budget can afford. Having multiple focal lengths in a single lens is great, and with modern cameras and their amazing image sensors, and with modern zooms' optical designs you really dont give up so much nowadays vs excellent primes on the market.
Cheers and best to you.