BobT Loc: southern Minnesota

If a choice between the 2 stabilization technologies, which is considered to be the more effective, in-body, or in-lens? Is there a definitive answer for this question? I'm aware that some instances allow for both to work together; increasing the stabilization(AKA "dual IS", & "sync IS". With my aging and shakiness that seems to be accompanying it, I need IS to be a real priority in any new camera purchase.
Thank you.

Architect1776 Loc: In my mind

I don't know but once IBS exceeds all IS parameters I would say IBS as the lenses would be simpler, less expensive and smaller.
One problem is the lens image circle must be larger than the sensor to allow for the movement of the sensor.
But I would ultimately like the IBS if the issues with it can be resolved like the lens image circle.

BassmanBruce Loc: Middle of the Mitten

I have a Sony a-77 with ibis and a sigma 150-500mm with os.
The lens stabilazation is much better than the ibis especially at the long end. It is very real time visible in the viewfinder.

Architect1776 Loc: In my mind

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

Conventional wisdom has been that IBIS is great for shorter focal lengths and lens-based IS is better at both, but more expensive.

Not sure how the latest crop.of cameras are doing . . .

wdross Loc: Castle Rock, Colorado

Wide to short telephoto, IBIS. Short telephoto to long telephoto, ILIS.
THE best stabilization systems on the market are the dual stabilization systems of Olympus (5.5 stops, 6.5 with the Pro IS lenses) and Panasonic (5.5 stops with dual stabilization). I have personally handheld to 4 seconds and have seen sharp photos taken at 10 seconds handheld. Some of the APS-Cs are starting to add IBIS to their cameras.

If you feel your aging and shakiness seems to be affecting your shooting, you owe it to yourself to go to the local camera stores and try the Olympus and Panasonic cameras and lenses. Try the Olympus E-M1 mrII with the 300mm f4 Pro IS lense or the Panasonic GH5 with the 100-400mm IS lense. Aim at anything in the store with those two, press the shutter button half way down, and watch what happens in the viewfinder. They are smaller, lighter, and less costly than the full frames and APS-Cs. There are cheaper body / lense combinations, not quite as stable, that will be less costly than those two combinations. But those two will show you what is possible.

wdross Loc: Castle Rock, Colorado

One more thing. I had a chance to travel Germany on a bus tour with my E-M1 mrII and a rented 12-100mm f4 Pro IS lense. Due to size constraints by the tour company, a tripod was not possible. My tripod was never missed even when I was shooting at 4seconds. I figure if I add the 12-100mm f4 Pro IS lense, the 300mm f4 Pro IS lense, and the 1.4 teleconverter to my E-M1 mrII, 7-14mm f2.8 Pro lense, flash, polarizers, batteries, and memory chips, I should be able to literally go anywhere in the world with a camera bag that would be approximately 6" X 15" X 15" and shoot 95 to 98 percent of any pictures that are there. The biggest limiting factor would be me, not the camera system.

Jeffcs Loc: Myrtle Beach South Carolina

As a duel system shooter not including raising the ISO on my D5 I can shoot steady at hand holding 200 ISO better with my OMDem1mk2 with 300f4 than I can with my Nikon and get more keepers out of the Olympus while saving weight and size

TheShoe Loc: Lacey, WA

Have you considered some of the newer models that can use a hybrid of both OIS and IBIS? They claim an improvement over either method used alone.

mizzee Loc: Boston,Ma

In body for me! That gives me greater choice in lenses, especially primes. If the lens has a stability system, great, but I don't have to care. Very freeing and saves money and weight!

wdross Loc: Castle Rock, Colorado

You are right IBIS will provide some image stabilization (5.5 stops for Olympus, 4.5 stops for Panasonic) no matter what lense is put on. Having ILIS, especially for the long end, is just "icing on the cake". For handholding, the dual IS cannot be beat. The only reason Olympus cannot go beyond the 6.5 stops is because Olympus hasn't figured out yet how to compensate for the effect that the earth's turning has on the gyros.

Cdouthitt Loc: Traverse City, MI

Olympus IBIS...accept no others.