I find the grassomatic pictures to be realistic. But PHemox is correct that grass is not often monochrome green without some more or less yellow leaves. The height of the grass depends on how much it has been grazed, the species of the grass and the moisture conditions. If the grass is a tall species, such as Timothy, Orchard Grass, Bromegrass or the like, has enough water, and it is ungrazed and not cut, it will easily reach a height of 3 to 3 1/2 feet or more than a meter high. This is basically what a hay meadow is. The picture of the short, green grass is probably a pasture that has been grazed.
Best regards,