Hitting a brick wall

I somehow missed this one at the beginning of April, but better late than never:

 

 

Selecting the Proper Brick Wall for Photographic Tests

I missed it to. thanks for posting. Like everything Roger posts, it's interesting and useful.

 

I do have doubts about this one:

 

Removing a couple of bricks from the wall to perform a “Clang” test is the simplest way to differentiate between Class 2 and Class 3 brick

 

Most often, we can't remove bricks without a cold chisel, a big hammer, and the risk of arrest.

 

In this area, almost all brick is red, and that's what I've used in the past, but I'll keep my eyes open for exceptions that I can use in the future.

Edited April 23, 2021 by samstevens

I somehow missed this one at the beginning of April, but better late than never:

 

 

Selecting the Proper Brick Wall for Photographic Tests

Well, no. In this case timing is of utmost importance.

I just like to take pleasing pictures (to me) , with whatever camera I am using at the time , and do not worry too much about lens quality as all lenses and cameras are different.

I know , I know , this is absolute Heresy.

:D :D :D :D.

Too funny. Much appreciated.

I conducted a "brick wall" test. Can't explain it, but the whole thing left me feeling oddly euphoric.

 

The 'Clang' test seems particularly effective, as a method of distinguishing the type of brick, but does anyone know whether the note produced changes with the age of the building, or the 'weathering' of the bricks, and should any residual mortar be removed first ? Also, should this test be performed using the video setting on my Pentax K3, so it can be evaluated in a soundproof environment at a later date ?

 

I shall be grateful for any professional help.

To a clang test properly, you need a scientifically calibrated catapult and a measured distance. You can then do a comparison test, such as film Nikons compared to Digital Nikons. Also best done in a vacuum!

But do Not load a dog into the catapult!

Edited April 26, 2021 by invisibleflash

Not a wall, but a chimney