Putting camera settings: 60 fps, exposure and light

Last updated 2026-09-30

The short answer: a putting camera has to really deliver 60 or more pictures a second in your room, with a short exposure, hanging straight down 6-8 feet over the mat, plugged straight into the PC, under a steady lamp. Resolution barely matters.

Still choosing a camera? See the best webcam for putting on GSPro, ranked. This page is about getting the most out of the one you have.

This applies whether you own an MLM2PRO, an R10, a Mevo+ (putting with a Mevo) or no launch monitor at all.

Why 60 frames a second matters

A putting camera measures two things: how fast the ball leaves the putter and where it starts. It gets them from pictures of the ball in the opening few feet of roll. The more pictures, the more there is to measure.

Take a putt struck at 8 mph, about a 29-footer on GSPro's stimp-10 green (GSPro putting chart):

At 30 frames a second, the ball moves almost 5 inches between pictures. That's nearly three ball-widths.
At 60, about 2.3 inches.

A fair rule of thumb: the ball shouldn't move much more than two of its own widths between pictures. At 30 fps that caps you at about 5.7 mph, roughly a 14-foot putt on a stimp-8 GSPro green. At 60 fps it's about double the speed, roughly a 42-foot putt at stimp 8 and farther on faster greens. These are approximate; green speed changes them.

That's why golfers on 30 fps cameras say long putts die. One wrote that putting "is working great until I get to long putts," with a 20-footer showing up as about 4 feet on screen (cam-putting-py issue #19).

What about 4K? It doesn't help. A bigger picture often means fewer frames, and the ball is plenty big at 720p from 6-8 feet up. The B0332 we play with every day is a 1-megapixel camera.

The number on the box isn't the number you get

"60 fps" on the box is the best case. Even our own camera shows it: the B0332 is rated up to 120 frames a second, and through Windows PuttBay reads about 60 distinct pictures a second from it. That still clears the bar, but it's half the box number. In a real bay, three things pull the number down:

Dim light. With auto exposure on, webcams often slow down to let in more light. Microsoft's camera documentation describes exactly this: to compensate for low light, a camera can drop from 30 to 25 frames a second so each picture gets a longer exposure (Microsoft Learn). On a webcam's standard Windows settings page, that's the Low-Light Compensation box.
The video format. USB 2.0 can't carry uncompressed video at these sizes and speeds, so webcams reach high frame rates in a compressed mode called MJPEG. The B0332's own listing shows high frame rates in MJPEG but just 10 frames a second in its uncompressed mode at full size (listing). A webcam maker's own 60 fps setup guide uses 1280 by 720, MJPEG, with Low Light Compensation off (example).
The rest of the PC. A shared USB hub, a busy CPU, or another app holding the camera.

Golfers hit this all the time. One bought a webcam sold as 60 fps and "for whatever reason cannot get the FPS up to 60," even after new lighting and a fresh Windows install (cam-putting-py issue #27).

The fix: measure the frames your camera actually delivers, for several seconds, in your bay's real light, in the software you'll putt with.

Exposure: the blur nobody talks about

Frame rate decides how many pictures you get. Exposure decides how sharp each one is. The ball keeps moving while the picture is being taken, so it smears. Same 8 mph putt:

at 1/30 of a second (a dim room on auto exposure), the ball smears almost 5 inches;
at 1/100, about 1.4 inches, nearly a ball-width;
at 1/1000, well under a quarter of an inch.

A short exposure needs light. That's why the lamp in the kit list isn't optional in the evening.

Global shutter or rolling shutter

Most webcams have a rolling shutter: they read the picture a row at a time, top to bottom. A fast-moving object gets captured at slightly different moments on each row, so it can lean or stretch. A global shutter captures the whole picture at once, so the ball stays round (Teledyne on rolling vs global shutter).

At putting speeds with a short exposure, a good rolling-shutter webcam can still measure a putt. That's why genuine 60 fps webcams are in testing rather than ruled out. A global shutter simply takes the question off the table.

Height, lens and what's in the picture

Straight down, 6-8 feet (1.8-2.4 m) above the mat, with the long side of the picture along your putt.
Hang it over the roll, not over your head. Leave about 4-5 feet of roll in view in front of the ball.
Watch the ball size. A higher mount or a wider lens shrinks the ball in the picture. Hung near a 10-foot ceiling, a typical webcam's 720p picture leaves the ball only about 13 pixels across, which isn't much to measure. Lower the camera or use a narrower view.
Make it rigid. A mount that slowly sags moves the picture mid-session. Our own mount sagged during a session. Ceiling mounts and solid overhead bars hold best.

The USB path

Plug straight into the PC, not through an unpowered hub shared with other gear.
Mind the length. USB 2.0 is specified for cables up to 5 meters, about 16 feet (USB cable length limits). Past that you need an active (powered) extension.
One app at a time. Close video-call apps and anything else that might grab the camera.

Light

A steady lamp over the mat. Bright, even light on the ball, with as few shadows as you can manage.
No dimmers. Many LED lights, especially dimmed ones, flicker too fast for your eye to see but not too fast for a camera with a short exposure (Swing Catalyst on LED flicker).
Watch the window. Daylight changes through a session. Evening light and your own shadow are the hardest conditions for a putting camera.

The rest of the kit

For the camera itself, see the ranked list. Around it:

Part	What to get	Status
Case or bracket	The B0332 is a bare board: its listing shows mounting holes but no tripod thread. Add a small case with a standard 1/4"-20 thread	Not tested: pick a sturdy one
Mount	A rigid overhead mount, straight down, 6-8 ft	Tested for height and angle; specific mount products not tested
Cable	Straight into the PC. The B0332's listing shows a 3.3 ft cable, so plan the run: under 16 ft passive, an active USB 2.0 extension beyond that	Tested direct; active extensions not tested yet
Lamp	A steady lamp over the mat, no dimmer	Tested in our bay; specific lamps not tested
Balls	Normal white golf balls, kept clean	Tested; colored balls not tested

If putts go missing after you've set all this up, work through webcam putting troubleshooting.

How PuttBay handles your camera

If you use PuttBay, you don't have to do the measuring above by hand.

Setup measures your camera: the frames it really delivers, the light, sharpness and ball size. It tells you plainly if something falls short and what would fix it.
30 fps cameras are refused. They can't read a lag putt, so PuttBay says so instead of guessing.
A normal white ball. No orange ball, no color sliders, no printed markers.
No guesses in your round. If a putt can't be read cleanly, the ball view says PUTT AGAIN with the reason, and nothing goes to GSPro.
It's proven on the Arducam B0332. Other genuine 60 fps webcams are being tested, and the camera page only lists results we've measured.

See tested cameras Join the free beta

PuttBay is an independent product and is not affiliated with GSPro, Rapsodo, Garmin, FlightScope or Square, or with any camera maker. Product names are used only to describe compatibility.