Leica M205 User Manual download pdf (Page 83)

Leica M series Manual 83

Setting the relief contrast

The two switches on the left side of the trans-

mitted-light base TL RC™/TL RCI™ activate two

built-in ﬂaps. The outer switch (1) controls the

inverted relief contrast, and the inner switch (2)

adjusts the positive relief contrast.

Depending on the ﬂap position, a part of

the opening of the built-in Fresnel lenses are

covered, which results in the diﬀerent contrast

eﬀects. Phase structures typically act as spatial,

relief-type images—in the positive relief

contrast like hills, in the inverted relief contrast

like valleys.

Increased contrast without relief is attained

if both diaphragms are set to 45°. A gap-like

illuminated area is created. By tilting the deﬂec-

tion mirror slightly, you can move the gap over

the entire ﬁeld of view and quickly toggle

between positive and negative relief images.

The dynamic eﬀect makes it easy to distinguish

phase structures from amplitude structures.

TL RC™ / TL RCI™: Operation

1 Switch for adjusting the inverted relief

contrast

2 Switch for adjusting the positive relief

contrast

3 Deﬂection mirror

1 2 3

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 113 114

No comments

Leica M205 User Manual Page 83