About making pictures   by  Waeshael

 

The purpose of this site is to help you to understand the technical factors that affect picture making, from the lens you choose to the image filters used in post processing.

Today everyone has a camera. As Apple says in their recent commercial “there are more pictures taken with iPhones than all other cameras combined.”


I have iPhones (6+,) Nexus 10 iPad Air2, iPad mini, iPad4 that have cameras built in. Now, it is entirely possible to make pictures with these devices that are worth posting on the WEB or even of being published.  I use dedicated cameras because of the lens qualities.

The lens is the most important piece of the camera. The lens captures the “colors” of the scene (see explanation of what are “colors” lower left.) Each lens type captures “colors” differently. Post processing cannot bring back colors that the lens missed.

In digital cameras the sensor transfers what the lens actually witnessed to an on board processor that then tries to reconstruct the scene. There are several major sensor manufacturers - SONY, Toshiba, Canon and a dozen others who make sensors for photographers. The vast majority of sensors go into phones - sensor manufacturers use the tooling for phone cameras to produce camera sensors. Sensors for camera are more expensive than phone camera sensors because they use bigger chips. For instance a good phone camera costs $15, and one for the Leica M9, about $1000. In the Medical field, sensors cost $80,000 a piece for something that is 11” x 14.”

The iPhone 6+ has an 8 MP 1.2 micron photo site spacing sensor (by SONY) with sophisticated software, and optical stabilization.

These opening shots were made on a film camera and various digital cameras form 3MP to 14 MP resolutions. Toshiba, Leica, Lumix,Fuji and SONY.

NEW: Compare DOF with sensor sizes


Optimized for 1080 display.

COLORS

When you look at these pictures, your brain is making the colors. The red, blue and green phosphors or LEDs of the monitor send light of specific wavelengths to your eye and this generates signals in the brain which then creates color. Someone who was blind from birth and who later regained their sight, would not see what you see, because the brain would have no record of shapes and colors to compare.

The camera designer who wrote the software to reconstruct the scene in the camera, we hope was not color blind, for you get the colors that the designer thinks is right for the scene, not the colors that your brain reconstructed when looking at the original scene. Each designer has a different idea. That’s why Leica M8 pictures don’t look exactly like Leica M9 pictures. And Fuji pictures are distinctly Fuji, and so on


NEXT TOPIC - Color Spectrum

COLORS from “all about colors” by X-rite

  1. Our original scene contains a wide range of natural, vivid colors. •

  2. A photograph of the scene captures much of the scene’s color; however, some of the dazzling tones are lost when the image is scanned into RGB data. Still more colors are lost or changed when the scan is displayed on a monitor—and the scene appears slightly different on different monitors.

•As we move our artwork between imaging, illustration, and layout pro-

grams, the colors are specified in different ways. For example, specifying 87% magenta/91% yellow produces a slightly different color in PhotoshopTM, FreeHandTM,and QuarkXPress®.


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