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Here's a close-up of the flower head of a Hydrangea plant. The plant itself is a tall shrub, about 2 metres in height. The flower head is a global of flowers about 20cm in diameter. (In fact the little buttons in the middle are the flowers, they are surrounded by "sepals") The blue of this particular Hydrangea head indicates that it's soil is somewhat alkaline and contains aluminum. In acidic soils this plant would have pink flower balls.
The camera recorded the following data with the original image file:
File name :DSC_3427.NEF File size :7.7MB (8091072 bytes) Date taken :Sat, 3 Aug, 2002 11:35:02 AM Image size :3008 x 1960 Resolution :300 x 300 dpi Number of bits :12 bits/channel Protection :Off Camera ID :N/A Camera :NIKON D1X Quality mode :HI (5.4M Raw Uncompressed) Metering mode :Matrix Exposure mode :Shutter priority Speed light :Off Focal length :105.0 mm Shutter speed :1/200 seconds Aperture :F9.5 Exposure compensation :0.0 EV White Balance :Cloudy Lens :105 mm F2.8 Flash sync mode :N/A Exposure difference :0.0 EV Flexible program :No Sensitivity :ISO400 Sharpening :None Image Type :Color Color Mode :Mode 2 (Adobe RGB) Hue adjustment :3 Saturation Control :N/A Tone compensation :Less contrast Latitude(GPS) :N/A Longitude(GPS) :N/A Altitude(GPS) :N/A