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Lens power - Changement d'objectif

13/8/2012

2 Comments

 
Picture
Picture
These two pictures were taken from the same place, with different lens, from behind my neighbour's barn. If you click on the image on the left you should just about be able to see the white windmill on the horizon, towards the right. It is 1800 metres away as the crow flies. The first image was taken with a Panasonic Leica 8mm fisheye. The second a 70-300 Olympus-Zuiko at 300mm. The EPL1 camera used has a crop factor of x2, so it is the equivalent of a 600mm zoom on a full frame sensor camera (or flim camera). The image has also been crop on my computer to enlarge it by around 100%, but at full resolution it is still a sharp image. Jean-Jacques has never had a digital camera and was amazed. 
Ces deux images fut prises au meme endroit derriere la grange de mon voisin. Si tu cliques sur l'image de gauche tu devrais pouvoir voir le moulin sur l'horizon vers la droite. C'est a 1800 metres. La 1ere image fut prise avec un objectif Panasonic-Leica 8mm et la 2eme avec un Olympus-Zuiko 70-300 a 300mm. L'appareil Olympus EPL1 a un facteur de grossissement de x2, donc c'est l'equivalent d'un objectif 600 mm sur un appareil a film argentique. J'ai grossis l'image de droite sur l'ordinateur, mais a pleine resolution elle pese toujours 4 Mo. Jean-Jacques (le voisin), qui n'a jamais eu un appareil photo numerique de sa vie, fut stupéfié.
2 Comments
Mike Yates
16/8/2012 03:56:44 pm

Amazing! Like a spy camera. I know nothing about your sort of high end photography but I am most impressed by it. Presumably these images occupy a several Mb with all that info hidden away in the pixels?

Reply
CB
29/8/2012 06:13:09 am

Hi Mike,
Each file is between 7 and 12 megapixels in size, though the pictures you are looking at are around 200 Kb.

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