Resolution measurements - TZ30 (ZS20) - Many images

Started Apr 3, 2013 | Discussions thread
OP J C Brown Senior Member • Posts: 1,617
Re: Resolution measurements - TZ30 (ZS20) - For Erik

Erik Ohlson wrote:

Amazing job!

It makes me feel pretty good about my own conclusions reached much less rigorously - shoot wide, minimum of ƒ4.5.

Noting that one anomaly with the cyan, possibly ƒ4.5 could be considered the "Sweet Spot".

Thanks for this one!


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'He who hesitates is not only lost - he's miles from the next Exit.'


Thanks very much for your kind remarks. I’m pleased to hear that the results of my tests agree with your own findings and make you feel pretty good about them.

In relation to your observation about the anomaly with cyan, it can on occasions be rather difficult to decide which of two lines of Es contains the smallest E of a particular colour which can be fairly described as being clearly recognisable as an E. In view of that I would recommend that you don’t read too much into the occasional point which lies outwith the general trend.

With regard to the use of maximum apertures with small sensor cameras I think you might be interested in the discussions in relation to these old "sweet point" related posts which I submitted on October 29th 2009 in response to BobT’s thread, “Do you take advantage of camera settings?”


and on 1st November 2009 in response to R Adamczak’s thread, “No real 'sweet spot' on lens in small sensor cams?”  See:


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J C Brown

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