Please, check this site, has a lot of free HDRI maps for your renders.
High quality HDRi sky for natural scene lighting.
Skies are color corrected very accurate to maintain the contrast and mood of the moment when they were shot. There is no need for an additional sunlight anymore. You get more than 10 16bit-raw backplates with each HDRi, to have maximun flexibility for your composition. The super high resolution ensures that every reflection is sharp.
- 18k HDRi-Sky .hdr
- 4K HDRi-Sky .hd
- 6k 16bit .dng backplates
- 4 preview pictures