a57 v d5100 for first DSLR

Started Apr 6, 2013 | Questions thread
123Mike
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Re: a57 v d5100 for first DSLR
In reply to baloo_buc, Apr 8, 2013

If you take away half a stop of light would you expect that the shutter speed to be the same (aperture considered fixed)?

If you religiously obsessively focus on "light taking away, therefore bad", then you will never be happy with an SLT. End of day, the sensor is very sensitive and it is a very good sensor, and it at least partially makes up for it. To me, the loss is not noticeable compared to other cameras, and in fact, it does even better than most of the Canons in its class, and they don't "take away" any light. To me, the evidence of end results is what counts. Plus all the amazing features I'd never want to do without, like full performance non-compromised live view for everything. I hate squinting through a VF, especially with my glasses. I *never* look through the VF, ever.

If it matters to you or not that's another question.

Sony says that it is ISO3200 and uses ISO4800 to achieve the same exposure (shutter speed and aperture). That's why you see this.

First time I heard a claim that Sony is lying about ISO. So you are claiming that ISO 3200 on the dial is more than twice as sensitive (and therefore more grainy) as ISO 1600? Do you have any credible evidence for this? Not saying you're wrong, but I'd like to see a test that proves that.

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