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Old 16-02-2017, 01:23 PM
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Interesting comparison of prime and zoom lenses

It would be interesting to see MTF graphs for a good quality refractor.

https://www.lensrentals.com/blog/201...t-zoom-lenses/

Cheers,
Rick.
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Old 16-02-2017, 02:04 PM
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Interesting read. I should probably learn to read MTF curves at some point, along with spot diagrams
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Old 16-02-2017, 03:00 PM
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Interesting read. I should probably learn to read MTF curves at some point, along with spot diagrams
Don't forget Ray Fan plots, Colin
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Old 16-02-2017, 03:12 PM
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Don't forget Ray Fan plots, Colin
Had to Google them! Seen them before, gives a bit of a graphical representation.
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Old 16-02-2017, 03:29 PM
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But but but...I'm sure my zoom is better than all the primes I've tried
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Old 16-02-2017, 04:38 PM
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Quote:
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Had to Google them! Seen them before, gives a bit of a graphical representation.
They're a lot more useful than spot diagrams. You can "read" the aberrations of an optical system.

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But but but...I'm sure my zoom is better than all the primes I've tried
You must have the one excellent copy out of dozens, Dunk
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Old 16-02-2017, 04:42 PM
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Trying the-digital-picture.com will also help. You can compare the quality of any two lenses, prime or zoom.
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Old 16-02-2017, 04:46 PM
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You must have the one excellent copy out of dozens, Dunk
Definitely, it was delivered by a unicorn after all
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Old 17-02-2017, 07:10 AM
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Definitely, it was delivered by a unicorn after all
And did it teach you how to take a photo?

Don't forget guys that cameras and lenses are just tools, nothing more and if the user can't take a photo to begin with its a waste.
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Old 17-02-2017, 09:26 AM
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And did it teach you how to take a photo?
And therein lies the problem
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Old 17-02-2017, 09:28 AM
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Never say never......

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Old 17-02-2017, 09:30 AM
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