title: Django : object_set vs filter
body: <p>Consider the following:</p>
  
  <p>I have an images model which uses a brand as a foreign key.</p>
  
  <pre><code>brand = Brand.objects.get(id = whatever)
  </code></pre>
  
  <p>I could retrieve all the images associated with that model with either of these ways:</p>
  
  <pre><code>images = Image.objects.filter(brand = brand)
  </code></pre>
  
  <p>or</p>
  
  <pre><code>images = brand.image_set.all()
  </code></pre>
  
  <p>From a performance standpoint, which one of these is faster?</p>