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The posting is from a chain-letter.

More info at Break the chain or just do a Google search on the topic plus the word "hoax".

It's probably OK to use the nominal values starting with 0.05 for clear and adding 0.15 for every step after that. I have seen over a dozen of the uncalibrated Stouffer tablets checked on a...

Although it is tempting to be suspicious of shilling, my quess is that you are seeing the actions of an inexperienced bidder. Shill bidding is rather stupid on several levels and a seller with good...

To find the values for 10 distributed tones using a 0 to 255 linear scale, use the following:

for i = 0 to 9

val = 255 * [(i/9)^g]

Experiment with g values from around 0.8 to 1.5. On most...

Adam's tonal Zones from white to black are usually mapped onto range where each zone represents 1 stop. When that is the case here is what you get:



<table>
<tr>
<td>Zone |<td>256 part...

To answer the first question, developed film that was exposed from tablet steps 20 and 21 should be clear. These must be clear because they are the reference density for all other measurements of...

Here’s the condensed version.

Measure SBR with a spotmeter or deduce from readings. Fit the SBR to the negative DR via CI. Control CI by development time. The negative DR should match the desired...

I have an 810 which I use for B&W work. It has a "visual" channel setting as mentioned in previous post. This setting combines the three color channels and is quite suitable for B&W. Even if you are...

Mr. Lee has it.

At close range with a complex shape like an onion, the plane of focus will not intersect the subject in all places. The area most blurry is the bulb. In this orientation, tilt will...

I am attract to landscape photography for the very reasons you describe both as a photographer and viewer. However, the insights and connections you describe may be necessary only for a particular...