What's in a lense
Feb 21, 2019 09:28:15 #
Feb 21, 2019 09:30:03 #
Dikdik
Loc: Winnipeg, Canada
... and some of the individual lenses(?) could be made up from 2 or 3 elements 'glued' together.
Dik
Dik
Feb 21, 2019 09:40:28 #
Feb 21, 2019 10:04:15 #
Dikdik
Loc: Winnipeg, Canada
StanMac wrote:
No wonder lenses are so pricey!Stan
There's a lot of science that goes into lens manufacturing realising that all colours 'bend' at slightly different angles when going through a lens. This has to be corrected for.
Dik
Feb 21, 2019 11:52:56 #
Insp Gadget
Loc: St Louis area
mrova wrote:
Very well could be the same lens cut in half...ya gotta allow some room for the saw kerf and the clean up of each side.
Actually it looks like the same half lens turned around and made to look like two halves. Look at the serial number on the top and the switch on the bottom side.
Feb 21, 2019 11:54:32 #
Insp Gadget wrote:
Actually it looks like the same half lens turned around and made to look like two halves. Look at the serial number on the top and the switch on the bottom side.
Believe you are right. Look at the shadows. Plus, on the backside of the right half you can see the same switch/lever as on the left half.
Good catch!
Feb 21, 2019 13:01:50 #
I don't believe you can section an intact lens. With the Leica it is obvious the lens was disassembled before cutting. You could not use the same blade to cut steel, aluminum, and glass. With the second lens the glass is intact meaning disassembly before cutting. Only other option is someone is doing things with LASERs that hasn't been published anywhere.
In any case the pictures certainly capture the complexity of modern camera lenses.
In any case the pictures certainly capture the complexity of modern camera lenses.
Feb 21, 2019 14:46:27 #
billnikon
Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont
charles tabb wrote:
I found this on the Web,found them interesting...
A half a Leica is better than most Tamron and Sigma's put together.
Feb 21, 2019 14:47:33 #
Feb 21, 2019 14:55:44 #
Feb 21, 2019 16:16:58 #
billnikon wrote:
A half a Leica is better than most Tamron and Sigma's put together.
Thanks.
That is just one of the reasions why I bought my Sony RX-10 RIV.
Feb 21, 2019 16:42:58 #
Looks like a manfacturers lens design mock up. Each glass element has an axis of symmetry, two principle planes, two focal planes, and 4 cardinal points. These are all mathematical constructs. Now you can see where lens defects can arise. If ALL elements do not exactly align, then a lens aberration arises. The lens glass, lens holders, the various spacer elements including their mounting are all subject to manfacuring tolerance errors, so now you can see why the best lenses are so expensive.
Feb 21, 2019 16:49:04 #
`
They just freeze a stock lens
at near zero kelvin and cut it
with a newkuliar lazer before
it thaws out. Eazy peazy.
.
They just freeze a stock lens
at near zero kelvin and cut it
with a newkuliar lazer before
it thaws out. Eazy peazy.
.
Feb 21, 2019 16:51:30 #
User ID wrote:
`
They just freeze a stock lens
at near zero kelvin and cut it
with a newkuliar lazer before
it thaws out. Eazy peazy.
.
They just freeze a stock lens
at near zero kelvin and cut it
with a newkuliar lazer before
it thaws out. Eazy peazy.
.
Right! We all knew that. We just wanted to see if you did!
Feb 21, 2019 16:59:28 #
billnikon
Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont
charles tabb wrote:
Thanks.
That is just one of the reasions why I bought my Sony RX-10 RIV.
That is just one of the reasions why I bought my Sony RX-10 RIV.
U are correct in that the lens on the Sony RX-10 is a Leica, however, unlike the Leica lens that was cut in half, the lens on the RX-10 is plastic, as are all parts of the lens and gears.
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