Show all images from Matrix Block
Because logoSlider.image is an array of images (even if there's only one image in the array) you need an additional 'for' loop to catch all of the images (not just the first or last). Try something like this:

{% for logoSlider in entry.logoSlider %} 
   {% if logoSlider.type == 'logo' %} 
     {% for image in logoSlider.image %}
       &lt;div class="column column-block"&gt;
         &lt;img src="{{image.url}}" alt="{{image.title}}" /&gt;
       &lt;/div&gt;
     {% endfor %}
   {% endif %}
 {% endfor %}