As you see in shot-screens the object image is shown in ListVIew. but I don't have access to this image in DetailView with same url.
List View:
{% for team in teams %}
<tr>
<td>{{ forloop.counter }}</td>
<td><img src="{% thumbnail team.logo 30x30 %}" alt=""> {{ team.name }}</td>
....
Detail View:
...
<h3 class="page-header"><img src="{% thumbnail team.logo 30x30 %}">{{ team.name }}</h3>
...