The thing is that I don’t set that width, it’s done either by wordpress or by the theme.
Here’s the original blog post content:
[caption id="attachment_597" align="aligncenter" width="300"]<a href="http://blog.orestes.io/2012/11/23/image-quality-test-2/wallpaper-722590-5/" rel="attachment wp-att-597"><img src="http://blog.orestes.io/wp-content/uploads/2012/11/wallpaper-7225904-300x168.jpg" alt="The alt text" title="This is the title" width="300" height="168" class="size-medium wp-image-597" /></a> This is a caption text[/caption]
It was created by doing a “Insert/upload”. i didn’t change anything but the caption, didn’t touch any width/height parameters.
As you can see, there’s no 310 anywhere.
Edit: Even if I managed to do that, I would still have problems with a 10px top and bottom padding:
I haven’t seen anywhere a Sentence demo with images inside the post (not featured on the gallery), so I don’t know how they should look but I don’t think this is on par with the quality of the rest of the theme. I can add my own CSS if needed, bu I need to get right of the 310 inline style and I don’t known where is it coming from.