Nautilus21 wrote:Dave
Awesome bit of kit these... Just in case you miss other thread..do these need anything chopping back on the e700 length or do you just need to remove the lens and fit in place..?
Thanks again
Not seen anything else about this yet. They will fit OK and will be at a good focal distance but it's a good idea to still remove some meat from the neck of the E700 if you can.
I'm slightly dyslexic and think I have failed to clearly explain about letting all of the lens see all of the CCD. It's frustrating that I dont have the right words lol. Bear with me while I try to explain with a couple of photos taken from a similar angle to show how the the edge of a lens looking? at the CCD sensor misses the nearest edge to it. I don't have an E700 with the full neck still intact to do a 'before and after' with an M42 adaptor so I'll try to explain with previously photo'd C mount ones.
I've taken this photo from an angle that is somewhere near where the near edge of the rear lens would be viewing the CCD sensor. Note that only about half the sensor is exposed to the nearest edge of the lens,
Hmm, I'll word that in a hopefully more explanatory way: About half of the sensor is obscurred by the long 12mm I/D threaded neck of the E700, so the information coming from the nearest part of the lens is failing to reach the nearest part of the sensor.
The nearest part of the lens in this photo can clearly view the nearest part of the CCD sensor in this photo - and therefore pass all of the light and image across all of the sensor. The end result has to be more information getting to your viewing screen.
I still think I've made a pigs ear of the explanation but its about the best I can come up with at the moment. Its probably safe to assume that the edges of a lens don't carry much important information but when the peripheral info is missing from shall we say all four sides of the sensor it has to make a difference. In the low light realm we are striving to improve even a small amount has to be of some value
