This is not a gear blog. When the gear matters to the creative output, however, it's time to write a gear post.
Such is the case when it comes to fashion photography. We've previously discussed the preliminary thinking that goes into a fashion shoot, but once the photographer and the designer understand the creative vision, it's time for the photographer to implement it through the magic ingredients of ISO, shutter speed, and aperture.
Camera considerations in the studio are fewer than on the street. In the studio with strobes, the maximum shutter speed will be the camera's sync speed. ISO in the studio is a much more controllable artistic effect, but unless there is something particular about your camera sensor's high-ISO noise that you like, those considerations are usually handled in development. Most of the attention in the studio is on creating the right kind of lighting and the right action with the model. In a studio, it's possible to work the same idea repeatedly until the image gets made.
The story is very different on the street, with only available light. Shooting fashion on the street is an order of magnitude harder than studio photography, but the images can be so much more engaging.