Thursday, March 22, 2012

Let's Try "How many megapixels?"Negative Film

"Maybe 5or6 megapixel digital camera, 135 film equals to"We often heard and listened to such the review or a sales promotion for digital cameras . To say the fact, I had no interest in photograph until a few years ago,  I didn't know in practice how resolution a camera film has.
 Having been bored with digital camera, (digital camera photography don't need the skill so much, mastering PC imaging aside.) I began to use film cameras. I have no film scanner, but I got to substitute digital cameras for a film scanner.  And I found negative film have far more performance than what digital camera promoters had said.

 This film is Kodak PORTRA160.(135 negative film)  Lens ; Cosina Zeiss PLANAR *T 50mm
Can you see the black rectangle line? This area became to the next image.

This image's resolution is far better than  a common flat head scanner.  This image has less area than one hundredth of original. One line equals to 2 pixels. This image seize is 487×328, and depending on lines in the image. Perhaps this image maybe equals to 200,000pixels.
 In conclusion, This trial shows 35mm negative film's resolution estimated 20 megapixels or more over. .

 Left image is a set for microscope digital photo made by myself. (Nikon Pronea Lens and Canon S95, light box, anti-newton ring acrylic plate, so on)












I didn't know how small detail a film can capture.  When I knew the real performance of negative film, it was due to be dismissed in any place I went. And now digital camera are getting superiority of the resolution to a film.
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   This blog is not always camera topics. Perhaps camera topics are few in usual.  My interests and aptitudes mainly are based on a cultural science or philosophy. Miscellany about Politics will sometimes be uploaded..

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