Thread: Same edge, same spot, same magnification, different light...

Same edge, same spot, same magnification, different light...
Bart

All pictures are lit by the same light source, only with slightly different angles



Go figure it out now?

What was the purpose of your message?

If I may be so forward, I believe it was to show how different your pictures for edge analysis can be when the light is hitting th subject at different angles. This is a fundamental of photography.

First sentences how he started his threat and second one how he did explain ?
at first "different light "
next "same light"
what he was trying to do ????
confuse us or to get help from us?

He just wants to illustrate that pictures have their own peculiar way of telling a truth.

Originally Posted by hi_bud_gl

First sentences how he started his threat and second one how he did explain ?
at first "different light "
next "same light"
what he was trying to do ????
confuse us or to get help from us?

I'm sorry Hi_bud, never meant to confuse you.
I've should have titled it "different light conditions".
Indeed I was trying to make a point that pictures at magnification can be very ambiguous.
The same edge may look completely smooth or deeply scratched. All it takes is a minor adjustment of the lightng angle.
Actually I saw a thread last night were someone posted scratch patterns left by two different hones. I noticed how he placed the razors at a different angle under his scope (which has the same effect as altering the lighting angle). I wanted to illustrate how easy it is to jump wrong conclusions out of that, but decided to start a new thread, rather than offense someone that I respect, and know to have only good intentions with sharing those pictures.

My apologies for the confusion,
Bart.

for clarification.I was just a little confused and trust me i don't have any hard feeling.thank you for a nice pictures it help .if you could compare 50x, 100x to 200x same blade in exact condition i would appreciate.on y microscope i can see only 50 aND 100x,300 doesn;t help much.
thank you