| Joined: | Thu Apr 19th, 2012 |
| Location: | United Kingdom |
| Posts: | 4424 |
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As mentioned already, the 18-55 has a severe hotspot throughout the widest part of its range rendering it useless for IR.
Today I discovered the 10-24 ALSO has a severe hotspot...but throughout is range (not surpringinly continuing the effect seen in wider end of the 18-55 lens)
The 14mm prime DOESN'T have a hotspot as JK discovered.
But the cheapo 16-50 'kit' lens ALSO DOESN'T have a hotspot...at least not up to f8. Beyond f8 there is a faint central fog which may be undiscernable to many eyes, and easily adjusted if required.
So I got oneof these lenses at a good knock down price and will publish some shots with it in due course.
It's interesting that the problem occurs in the 'quality' wide zooms but not the cheap ones, longer zooms or primes?
Obviously to do with lens construction, but what exactly, can't say.
Last edited on Tue Jul 1st, 2014 11:45 by Eric
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Eric