Do we still need a TC?

Started Nov 11, 2013 | Discussions thread
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Ian Stuart Forsyth
Ian Stuart Forsyth Senior Member • Posts: 2,514
Re: relative resolution lens vs. sensor

awaldram wrote:

I seem to remember from my dim and distant past that 35Mp ff equates to the same resolution as I so 100 print film,

This would be about 24 Mp on apsC so today were approaching lens load that a 30 year old consumer print film would.

Given 30 years ago emulsions were available with much better resolution and those lens of the day still out resolved them, Today decent glass is not even sweating on today's sensors.

Before the K5 the largest concern with IQ when using a tc was how much light was lost but now we can use TC in light conditions that until recently was only a pipe dream. In pentax land its hard evaluate using TC due to the fact most are mismatched and most of the time used between different lens companies. With companies that build lenses and optimise the tc for use on those lenses you have some really good combos out there that deliver top of the line IQ.

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