How sensitive is your camera?

screwdriver · 2012-11-20T12:25:39+0000

Has anybody else noticed this? If I put my K5 and Q cameras side by side, both in Av(Aperture Priority), framing the same shot, both with the same aperture and ISO the shutter speed on the K5 is twice as fast as it is on the Q, or 1 f stop. The real surprise came when I checked my friends Canon 5D which was two stops slower!! The same as Sony (with their semi-silvered mirror robbing you of 2 stops), the K-01 and the Nikon D7000 were both the same shutter speed as the K5. Is this just a one off? Has anybody else noticed this phenomena? It means that if you shoot in low light, don't buy a Canon and you can use 2 stops smaller apertures on a Pentax (forgetting the DOF differences) and get the same shutter speed as a Canon which is quite a saving on wide aperture lenses. No wonder the K5 has such a good low light performance. We should shout this from the rooftops.

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Smeggypants Smeggypants

7671 posts
17 years
Smegland

Posted 22/11/2012 - 16:38 Link

Mannesty wrote:
When I read the title of this topic I thought to myself, I don't think I've made mine cry yet.

LOL

[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283