I realized that stacking is a essential tool if you often do macro's or close-ups. I downloaded CombineZP and after some frustrations I could show this to the masters to pull apart. This is a 5-stack, or whatever the term is. I do not know why, but I missed one bracket. I deliberately chose f5.6. What would have been a better option? 1/15 f5.6 ISO-200 50mm/f2.8 Sigma
Hi Aart, Looks pretty good to me. You could certainly use a smaller aperture which would make life a little easier, though your shutter speed is already pretty slow at 1/15, so you would have to ensure good technique to eliminate any camera shake. At 1:1 with the D300s, anything up to f22 is going to give you acceptable sharpness, above that (smaller apertures) diffraction will certainly become more noticeable and detail will be lost.
Thanks for the encouragement. F11 make sense to me. Very naively, I wanted to see if the program work and how well it work. I have one further question: one of the masters said he to multiple stacking by hand changing the distance from the camera to the subject. I failed miserable in all my attempts. What work best for me is to change the focus manually and keep everything else on manual, that is constant. Obviously with the available light I used a tripod.
>work. I have one further question: one of the masters said he >to multiple stacking by hand changing the distance from the >camera to the subject. I failed miserable in all my attempts. >What work best for me is to change the focus manually and keep >everything else on manual, that is constant. Obviously with >the available light I used a tripod.
he is actually right, when you want to do so, you need a good macro focussing rail (which is not a cheap thing). When you change the focus, you change the scale (i.e. the object nearest to your lens is at 1:1, while the farthest one is at 1:2), but the stacking software which is around today usually corrects for that so it generates no problems.
Looks like you've pretty much got it, Aart. As the others have mentioned, I would start with f/11 or f/16 shots, this makes it easier. The focus stacking software has to account for small changes in size regardless of whether you change the distance to the subject or the lens focus setting - use whatever works for you.
Mark Smith Just like I previsualized it, more or less...