Interesting article on DxO about 5D III and D800 resolving power

Started Apr 4, 2013 | Discussions thread
schmegg
schmegg MOD
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Re: Don't get your meaning?
In reply to Mike CH, Apr 7, 2013

Mike CH wrote:

schmegg wrote:

Hehe.

It's not really an "insistence", but more a practical concern.

You see, when people start arguing about "which sensor can resolve more detail", they invariably resort to 100% pixel view to 'show' the difference.

Gotcha. No, that does not make too much sense, really. I've kind of trained myself to overlook that, though - at least when there is no sensible comparison to something similar.

You might have guessed that sensor resolution as such is of lesser interest to me

TBH - for me - it's important 'sometimes'. Only because I shoot a bit of wildlife and can't fund (or justify) those mega tele primes, and find myself reach limited.

Mostly, I take my FF. Sometimes, I take the cropper. And, occasionally I take both!

So, if one intends to compare at pixel level, then one should ensure that the pixels have been presented with the same detail to record to begin with - otherwise the comparison is completely inane.

Very true. But is that what the OP and the article were about? I would say they were actually trying not to compare at pixel level...

Yeah - I'm not sure exactly what they are up to.

I think it's largely an exercise in 'statistics'. They've tallied up all the data they have from various lenses on each body, graphed it up (as they do ), and then drawn some conclusions from it.

That's DxO all over!

Seems obvious to me that a 20% increase in linear resolution will result in some more detail being recorded.

How much that matters really depends on the application and the intended output. But 20% isn't a huge amount - just enough for it to be 'possibly significant' (to coin a phrase).

It's roughly the same difference as the D5200 has over the D7000. Or, in fact, the 7D over the 5D3 in a reach limited scenario.

Thing with DxO is that they measure sharpness, not resolution (which is fair enough, they are testing lenses after all) - and so artifacts will be counted as a positive in their results as long as they are sharp artifacts.

BTW - I'm actually an engineer.

When I shave in the morning, I see one, too.

Not that I shave every morning!

LOL! Me either. Hehe.

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