My neighbour's car makes a weird squealing noise when it's just sitting on the curb, turned on. I don't know if it's in park or what, but it's a strange noise.almost the squealing you hear when someone burns out and spins their tires (gassing it with their foot on the brake). But they're not doing that.they just turn the cat on and sit for a minute, sorting out whatever they're doing in the car, then it stops as they finally start driving away. Why is it making that weird sound?
Don't buy a helmet over the internet until you have tried on the exact helmet at a dealers, otherwise you cannot know if it fits properly if it isn't a snug fit it will not be as protective as it should be. Helmet manufacturers have differently shaped shells and padding so one size from one manufacturer might not fit while another will.
This is my area of expertise (jewelry!) Generally speaking, highly diffused light is better for reflective materials (there are exceptions). However, managing reflections often winds up mattering more than the quality of the light. Thus jewelry is typically shot in some sort of tent to make a uniform (usually white) reflection on the metallic surface. It is vital to carefully control the angle at which light is hitting the reflective surface. For your cell-phone LCD, if the light is hitting at a direct angle, the light source may be reflected on the surface of the screen, obscuring the display. An oblique angle will help alleviate this issue, even if you are using hard light. So you could shoot your cell phone with highly diffused light, but in this case (high-tech electronics) I'd probably look at a hard-light creating sharply delineated shadows, but with the source hitting the screen on a very acute angle and thus not reflecting back into your lens much.
