Any way to add transparency to geotiff layer

[DineshNeupane]

Is there any way to add opacity to the geotiff layer? I tried with this but it's not wprking.

const windSpeedOptions = {
            opacity: 0.5,
        };

[Raphaël Merx]

see #9

[rohith231]

How can i change the lat lng to different location it is inbuilt location in austraila