Ommatidia deep crop
Close up from the edge of an eye of a Longhorn beetle (Coleoptera, Cerambycidae), Ceroplesis sp., about 25mm long (January 2012, Lubumbashi, DR Congo).
The specimen was kept dry for 12 months and rehydrated with 10% ammonia for about 20 minutes and photographed immediately after.
Stacked image based on 135 exposures about 4-6µm apart. Taken with a Nikon CF Plan 20x/0.40 epi BD/DIC elwd11mm microscope objective fixed in front of a non-reversed Rodenstock Apo Gerogon 240mm 1:9 enlarger objective (tube lens). This lens combination was given 14cm of extension (bellows) to obtain an image of about 1.8mm wide. Used 3 ledlights (Jansjo), diffused through white paper (80g/m²). Other specs: ISO100, 1sec exposure, WB 3500K). Treated in LR for CA (in the blue), seriously cropped, now just about 0.9mm wide (i.e. close to a 40x magnification). Notice that some hairs reflect the light very strongly, couldn't solve that problem ... maybe with a circular polarization filter?
Ommatidia deep crop
Close up from the edge of an eye of a Longhorn beetle (Coleoptera, Cerambycidae), Ceroplesis sp., about 25mm long (January 2012, Lubumbashi, DR Congo).
The specimen was kept dry for 12 months and rehydrated with 10% ammonia for about 20 minutes and photographed immediately after.
Stacked image based on 135 exposures about 4-6µm apart. Taken with a Nikon CF Plan 20x/0.40 epi BD/DIC elwd11mm microscope objective fixed in front of a non-reversed Rodenstock Apo Gerogon 240mm 1:9 enlarger objective (tube lens). This lens combination was given 14cm of extension (bellows) to obtain an image of about 1.8mm wide. Used 3 ledlights (Jansjo), diffused through white paper (80g/m²). Other specs: ISO100, 1sec exposure, WB 3500K). Treated in LR for CA (in the blue), seriously cropped, now just about 0.9mm wide (i.e. close to a 40x magnification). Notice that some hairs reflect the light very strongly, couldn't solve that problem ... maybe with a circular polarization filter?