Originally posted by mughal113 Just curious to know what is achieved with this? The shot with smallest aperture will have the deepest DoF and the other shots would be a subset of this one, or is there something I'm missing?
I often shoot at any different ƒ stops.... your lens is probably sharpest @ ƒ5.6, but is useable until ƒ16 and sometimes ƒ22. How your picture looks is basically a combination of sharpness and DoF, but the appearance of the out of focus area makes or breaks a lot of images.
Images taken with the Sigma 70 macro, which just happened to be on the camera.
So, no, images taken at different ƒ stops are not subsets of each other , sometimes they are completely different images, except for the subject.
IN the subject below the foremost water drop focus point
Narrowest DoF, most creamy bokeh... ƒ2.8
Sharpest Subject , acceptable bokeh... ƒ5.6
Widest DoF, objects that are out of focus at ƒ2.8 and ƒ5.6 are now in acceptable focus. Much more of the subject flower is in focus.But the back ground out of focus areas are considerably more messy. - ƒ11
Which "look" you're going for, or in my case, which images I like the most is very difficult to predict. I find when I bracket for DoF, it's not often that I anticipate what my final preference in DoF will be. I'm like Steve Jobs, show it to me and I'll pick the right one. And the scary thing is, people who don't bracket for DoF in some situations, don't even realize they are making a choice.
These images are all different and stand on their own. In no way is one a subset of the other. I can see using any of the three depending on what I was looking for.
Last edited by normhead; 07-04-2015 at 06:55 AM.