I was feeling bored yesterday afternoon, so I thought I would have a play with 'still life' macro, and multiple image stacking, using my slide-rail set-up. It was more of a play/experiment, as opposed to serious photography.
I built the slide-rail set up, as a project, some considerable time ago, but never actually got around to using it. The 4 way slider, was bought on e-bay, for £20.
Using the 5D3 and the Sigma EX 105 f/2.8 macro, all in manual mode, I illuminated the subject with a multi LED lamp, mounted on the 'hot shoe' (see picture below). A piece of black card was placed behind the subject.
The DoF required was over 40mm, and the distance from lens to subject, was less than 300mm, so way beyond a single focus point with the macro.
I took 19 shots, moving the camera forward a few mm at a time, between each shot.
Apart from the initial focus on the nearest point, the focus wasn't touched, with each subsequent focus point being achieved, by moving the slide-rail forward. A remote release was used to operate the shutter. I didn't bother with mirror lock-up.
All 19 images were then stacked in photoshop, to produce the final composite image, with the full DoF.
0.5 sec exposures, at f/8, and ISO 100
While Photoshop does a pretty good job, its probably not as good as dedicated stacking software, such as Zerene Stacker, or Helicon Focus.
BTW, Mr Cactus hasn't got a 'dew drop' hanging from his nose, its a blob of glue (lol).
Dave
I built the slide-rail set up, as a project, some considerable time ago, but never actually got around to using it. The 4 way slider, was bought on e-bay, for £20.
Using the 5D3 and the Sigma EX 105 f/2.8 macro, all in manual mode, I illuminated the subject with a multi LED lamp, mounted on the 'hot shoe' (see picture below). A piece of black card was placed behind the subject.
The DoF required was over 40mm, and the distance from lens to subject, was less than 300mm, so way beyond a single focus point with the macro.
I took 19 shots, moving the camera forward a few mm at a time, between each shot.
Apart from the initial focus on the nearest point, the focus wasn't touched, with each subsequent focus point being achieved, by moving the slide-rail forward. A remote release was used to operate the shutter. I didn't bother with mirror lock-up.
All 19 images were then stacked in photoshop, to produce the final composite image, with the full DoF.
0.5 sec exposures, at f/8, and ISO 100
While Photoshop does a pretty good job, its probably not as good as dedicated stacking software, such as Zerene Stacker, or Helicon Focus.
BTW, Mr Cactus hasn't got a 'dew drop' hanging from his nose, its a blob of glue (lol).
Dave
I don't know. And then to try and work out focal/aperture ratios........ Something I should learn. or at least be aware of no doubt!
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