Acurtainovertheilluminated background behind the focal plane createsaneffect reminiscentofnebulaeinthenightsky.
Photographyofflowersinavaseinanexposureseries (HDR) is complicatedbytheirlightsensitivity, which causesachangeof positioninshorttimescales. Plantsconstantlyrearrangetheir leavesandblossoms. This resultsin blurring, whichcanbecompensatedfore.g.byrepeatingthe shot series, shorter exposure time seriesortoolsforaligningtheimages. Or you cando your image withoutHDR, becausethedynamicrangeof the cameradataissufficient.
Thecenterofa Gerbera blossomisrichlystructured. Due tothehighresolutionofthe camera back (150 MP), itispossible tocrop outthecenter still ingood resolution.
Thetransparentrepresentationofthepetalsisachievedby usingalight box. Thelightshouldberelatively bright, butdoes nothavetobefullyhomogeneous. Theheatofthelightdoes notmatter, itisadjustedusingRAW formatinpost-processing. More informations about this method see web-pages of Harold Davis, who invented this method.