Viltrox 23mm 1.4 - About optical limits review (not just reading the final rating)

Started 3 months ago | Discussions thread
OP Rmcp20 Senior Member • Posts: 1,278
Re: Viltrox 23mm 1.4 - About optical limits review (not just reading the final rating)

Holden75 wrote:

Rmcp20 wrote:

Atsel wrote:

More pixels means more lines; more lines means more line widths per pixel height

If you need an example, check this:

https://www.opticallimits.com/canon-eos/725-canon28f18apsc?start=1

https://www.opticallimits.com/canon-eos/155-canon-ef-28mm-f18-usm-test-report--review?start=1

Well i don't think you're wrong, but imatest says it doesn't matter, so….

Do they? Clearly sensor size/pixel density matters when it comes to results. Any test result is the product of an interaction between the lens and the sensor. The 90 was tested on the 16mp sensor and but the Viltrox 23 has higher scores for some of the results. The 90 will outperform the Viltrox 23 if done in the same sensor. It is the reason why opticallimits has tested lenses on the same sensor to be able to compare. Now they have moved to a larger sensor you can't compare between the two sets of results.

Look at the results for the Sony e mount 16/2.8 on the 14mp sensor https://www.opticallimits.com/sony-alpha-aps-c-lens-tests/542-sony16f28nex?start=1 and the 24mp sensor https://www.opticallimits.com/sony-alpha-aps-c-lens-tests/728-sony16f28nex7?start=1 . Same lens different sensor size, massively different results.

You can't compare these numbers.

That comparison of the Sony 16mm 2.8 on 24mp and 14mp sensors is actually very good. It shows that in the middle where the lens is more capable, aditional pixel density improve the results, because there the lens can handle them.

However, in the corners the results are much worst with a 24mp sensor, because the lens is not really capable there, it falls apart even at 14mp.

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