Question about Panasonic 14-140mm versions

Started 2 weeks ago | Discussions thread
OP dbateman Contributing Member • Posts: 521
Re: Question about Panasonic 14-140mm versions

OutsideTheMatrix wrote:

sensitivity to "invisible light" as it's called is down to the UV/IR blockers that are used over the CCD, not usually a characteristic of the lens itself.

Actually quite wrong with your assumption here. The glass used will have significant impact on light transmission. Also the coatings used on the elements. Then hot spots can occur depending on reflections within the lens and the quality of the specific filter you use. This can all be seen even with a leaky Olympus camera that allows quite a bit of IR through the blocking glass.

A full spectrum converted camera, like I have will show you more obviously. But you maybe surprised that a off the shelf EM1mk1 is quite sensitive to IR and will also show you the contrast and sharpness difference between lenses.

I am looking for a weather sealed all purpose lens also capable of IR. It seems to be between the Panasonic 12-60mm f3.5/5.6 or Panasonic 14-140mm f3.5/5.6. The Olympus 14-42mm R2 is great for IR and even UV. But its not sealed and has a limited range. This one I own and have played with. The Olympus 14-54mm mk1 I also own and is great for IR. But with the death of Olympus will need a m43rds weather sealed lens as it only focuses fast on EM1 bodies and I want more m43rds choices going forward.

 dbateman's gear list:dbateman's gear list
Olympus E-3 Sigma SD14 Olympus E-M1 Nikon Df Panasonic Lumix DMC-GM5 +1 more
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