So... I finally come to a decision to go with the OM-D... Is there any big hand users out there?

Started Mar 13, 2013 | Questions thread
Martin.au
Senior MemberPosts: 5,430
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Re: Issue 2: How to fairly compare output image IQ of two similar DSCs
In reply to Jack Hogan, Mar 16, 2013

Jack Hogan wrote:

texinwien wrote: So yeah, dunno Jack. I'm with you in a lot of ways here, and I understand where you're coming from, but you're making one or two small errors in logic that are throwing off the entire rest of your argument.

Only for people that take snippets of my posts out of their context. I've known this stuff as summarized in these two posts for years and certainly did not change my mind in the last couple of days for these two threads.

Jack

PS This phantomatic 'proof' you keep referring to was just a fictitious example connected to issue 1 (inconsistent in-camera ISOs between cameras and manufacturers), labelled as such for correctness and nothing to do with exposure, of what may happen when in-camera ISO labels are arbitrarily assigned by a a manufacturer - foolish people take them at face value at their own peril when deciding where to lay their money.

I still want an example of point 1

"1) Inconsistent in-camera ISO labelling by manufacturers."

Eg: If most cameras require ISO200, 1/200, f5, to generate a nice jpeg, find me a camera that requires ISO400, 1/200, f5 for the same scene.

The OM-D is not an example of this, as you have claimed here;

"The issue is that if you take in-camera ISOs at face value you end up comparing apples to oranges, especially with the EM5 which is a relative outlier in its ISO interpretation"

as it's manufacturers ISO matches other cameras manufacturers ISOs very well.

Or, to reiterate Texinwein's comment.

"Not at all, and I already have. Comparing any number of cameras based on camera ISO Setting, as long as we know that all of those cameras have had their ISO settings measured and verified by a trusted third party using the SOS method (as DPReview does) is completely valid, as long as exposure was set carefully and correctly in all cases.

And, since the vast majority of consumers will only ever expose based on camera ISO Setting, it's not only a valid method of testing, it's also the one that's most useful for the audience who will be buying and using the tested devices."

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