this image is just to show the effect of exposure time  vs. aperture. (The plant is: Muscari armeniacum)
<p><b>Aperture: f/40</b> (Aparture is very small so only little light gets through. thats why exposure is so long)
</p><p><b>Exposure: 1/8 sec (0.125)</b>
</p>
The background is quite sharp because of the small apparture
<a href="//commons.wikimedia.org/wiki/User:Amada44" title="User:Amada44">User:Amada44</a>
2010-05-28
<span class="int-own-work" lang="en">Own work</span>