Light and The Photographer
Written by: Digital PhotographyPhotography Lesson #1
Light is the primary working tool of the photographer. Light is the visible portion of the electro-magnetic spectrum. The spectrum starts from red, the weakest of rays, all the way to violet which is the strongest of rays.
Light rays from the sun are considered white and they contain all the colors of the spectrum. Black is the absence of any color.
When we place a prism in front of a white ray, the prism will diffract (separate) that light into
all the colors of the spectrum. Stop for a minute and watch this:
When we place a LENS in front of any ray, that lens will simply refract (bend) that ray.
So, being in focus simply means moving the lens elements forward and backward until all the rays coming toward the camera from the subject meet at one point; the focal point on the film.
In the illustration above, you will see a point where the rays meet. That point is also called the film plane. At that point, all light rays of the subject must meet to accomplish sharp, focused pictures.
Once you have this down, you’re ready for photography lesson #2: Light and the Human Eye.
simple words make understanding easy
It’s a very good course,I will go on .
itz very very useful to beginers
i liked the simple explanation of the concepts of light…would like to read further…
very good information thanks
thanks
Great way of explaining.. will keep going
Fascinating; due to the digital world of today, most people would not start to know how a camera, camcorder or anything really works!
Good one to begin with.
I decided to go to basic because I jumped into photography with no basic! My 1st impression here is …. all right, what next!
Glad you like the photography lesson on light and the photographer. Near the top of each page are links to the next photography lessons in the course. These links allow you to navigate through the lessons one at a time. Also towards the bottom of the pages in the “Beginner Photography Course” are links to the next lesson in the series.
I AM INTERESTED TO CONTINUE THE COURSE
Interesting can’t wait to continue
Starting from Light with simple words attracts me. I will carry on..
what next ?
this all ready appears to be a course that i will understand and be able to use in my photography efforts. Thank you
Great this is fantastic
This is absolutely the kind of thing that I wanted to start of with.
good start!!!
Great lesson for me as an ammature fotografer.
Thanks a ton!
Very simplistic and understandable. Love the illustrations gives a good visual to help understand more. I want to continue to learn more! Thanks for the information.
I want to continue to learn more! Thanks .
Great, very helpful
Straightforward and easy to understand. I will continue with this course.
Simple. Known basics
Just got my first serious camera; I need this education. Thanks.
I have also recieved a serious camera and found this little piece pretty informative. It’s nice to know that photographers are looking out for beginners like me.
This is one of a kind thanks to the authors and contibutors.
Miles of Thanks to all those who are putting in their efforts to make us understand photography better.
Actually the drawing is incorrect. The head and feet do not come together when it is in focus. What happens is all the rays of light that emanate from ONE POINT on the subject go through the lens via many different angles but end up focussing BACK to one point where the film/sensor is located (ie focal plane)
James, thanks for your comment. The image is overly simplified to illustrate the light coming through the lens, and coming into focus on the film pane or digital sensor.
Thanks for your excellent website I am still working through it and want to start from the very basics and work through the entire lot so I don’t miss out on anything.
For the drawing my preference would have been to draw an upside down person on the RHS and say using the head and show two rays of light (one horizontal and one angled down) through the lens and show how they end up on the head on the upside down image (where the horizontal light is now angled down and the angled down light is now horizontal). This would also look simple but illustrate just how the image is formed inside the camera. This is hard to explain in words
i am looking forward to starting a career , i am very excited, with the basics in this course
Good way to start. Nice explanation
That was Awesome very easy to Undrestand thanks
I just bought a Canon Rebel Xsi. I have been in love ever since but find myself getting easily frustrated at how difficult it is sometimes but this website has been awesome at helping me understand easier. Just a quick question, do you have any tips on taking pictures indoors? I’ve been practicing with my daughter as my model and since it’s winter and pretty cold I dont get a chance to test it outdoors and no matter what I do in M mode it is always soo dark. Even when my ISO is at 1600 which I don’t really want but I don’t know what else to do??? I also thought it was a good idea to try and stay away from using the flash?? Any hints would be greaty appriciated!! Thanks in advanced!!
For beautiful images you’re correct you do not want to be using an ISO higher than 400 if possible. The best cheap lighting that there is indoors are windows. They can actually create beautiful light. Often times during the winter it can seem dark and dreary, but the reality is that even on overcast days the light from the sun can be much more intense than the light bulbs indoors. If you are really serious about portrait photography you may look into lighting from your local photography store. If you happen to have a ton of lamps lying around set up a few a different angles and try shooting that way. I would agree that a flash can be quite dangerous but we have a lesson on Flash Photography that is helpful as far as when to use or not use a flash. Also, look at some images that you like and think of how they might have positioned the lighting then try to recreate it. Good Luck creating beautiful images!
i can’t wait until the next lesson
your information on light was very helpful. BRIAN WEST-INDIES
Looking to expand my knowledge and this lesson helped!
This is a great website so far! I love it!
And it’s a great help for me while I’m taking my photography course in school. Yay!
I cannot thank you enough for taking the time to share your expertise. I have been trying to find ways to learn more about photography in the hopes of one day starting my own business. Your generosity will never be forgotten! Can’t wait to learn more!!!
Im upset I wasnt reading this years ago. Id be light levels ahead of where Im at now. Ive learned completely by trial and error with zero instruction. Needless to say am still learning and the process has been extremely frustrating. Thank you.
The blue end of the light spectrum is high energy with a short wave length. Red is low energy light with a long wave length. Sunsets are red because the dust in the atmosphere scatters the long wave lengths and blocks the shorter. Blue images appear light in a Black and White photograph because the high energy blue light burns deeper into the negative. This is also illustrated by color temperature. Blue has a high Kelvin temperature while that of red is much lower.
A last I understand the logic bihins the primary colors. thanks
This looks very easy to understand, and its FREE! I’ve always loved photography and wanted to learn it so I can have it as a hobby.
Thanksss. XOXO(:
Photography has been my hobby for a very long time but have not been able to learn the intricacies and mechanics involved. I am happy you are giving people like me the opportunity to learn something valuable as this. I can’t wait to continue. Thank you.
This information is very helpful, as it helps me resolve the issue for the lighting.
so where is the lesson 2?
Each of the lessons in the beginner classes has a link at the bottom pointing the next lesson. Here’s the one for Lesson 2.
Hello! thank you for this important info.
This what I was looking for, and I feel so enthusiastic.
This is a very good photography lesson for me as a ammateure
photographer, thanks again. thruly yours. JL/C
Thanks for taking your time to do this for all of us. I appreciate your time and efforts. I enjoyed this.
Easy to understand thanks for making this site
Thanks for this site. I have been wanting to learn photography, but had no clue where to start. I found your site while looking for online photography schools, and LOVE it here. I know I will learn, and it will not cost me an arm and leg to get the information I want to gain. Again thanks for this site and the passion to help other with what they love as well.
This information is very helpful, as it helps me resolve the issue for the lighting.
This is absolutely fantastic, and I am still in complete awe that you guys are doing this for free. I have had the passion for photography since 9th grade when they cancelled all the photography classes. I am now in my mid 30′s and wanted to take them through a community college and cannot seem to fit them in my schedule with the times they have. My husband had bought me a nice camera and lots of books to learn with, but this site seems so easy to understand. Thanks a ton again.
My only question is this. What is a better way to explain what the “film plane” is? I am just not grasping the meaning of film plane in your words or pictures.
Thanks in advance.
Audrey, The film plane is simply the area of film that the light will be focused onto for a photograph. In digital cameras the film plane has been replaced with digital sensor.
excellect explanation!!!
Thank you for an excellent site. Possibly i do not fully understand the light coming in? I accept that different colours have different wave lengths. The thing that puzzles me is how you tell that your lens / cmera is in focus Bright sunny days are one thing but in less than ideal circumstances i am not always certain if i am in focus resulting in juggliong back and forth. sure you can see on the lcd but sometimes when i download the photos i can se that they were not in focus as i thought.
It sounds like your problem Brian is not the focusing but the low light camera shake. Your hands are shaking quicker than the shutter can open and close. You need a Camera Tripod. If you don’t have a tripod you can find more create ways to support your camera. It may also help to learn a bit about exposure control.
i have a tripod. did not realise how important it is. I will certainly take your advice. Thank you.
I just discovered this site, I am looking forward to continuing this course. My local junior college has little to offer as far as photography.
I am now able to understand terms like shutter speed, aperture and ISO. Your lessons are really good for beginners
This is very interesting. I am often the family photographer during the Christmas Holidays. I may turn my hobby into a career after taking this course.
Thanks
very clearly explained first lesson, I have just had my daughter, everytime I want to take her pictures they go wrong in some way or other, thus making me think I should do a course on photography…to understand the insight of it….thanks
Thanks looking forward to more.
I love this so far. i am new to photography and i find this very useful. thanks !
Hi there, just came across this site and am so thrilled. I have been told that I have a good eye for photography and it has been a passion of mine since I can remember. I have always kinda seen the world in pictures, if that makes any sense. I just don’t have the technical skills and I know that will boost my photos alot, as well as my confidence. I look forward to learning as much as possible from this course and thank you in advance for helping me to become a better photographer. Is there anywhere that you can get your photos critiqued online that you can recommend? Thanks so much for this course!
If you Google “online photo critiques” there are are a few good communities like photosig.com, photo.net or photocritique.net
my photography instinct is tremendously stimulated by this site…Im a Newbie with DSLR and I will be a regular of this site.Thanks and Carry on guys!
I was so sad today to find out that my dream to be a photographer will cost around $75,000, which I do not have. I laid my 2 boys down for bed and came across this website and after reading the info I cried. I was disappointed today because after searching and realizing that the colleges I was interested in didn’t care about me they cared about my money. I am happy to see a site that actually will help others. You are taking your time out to help me and some many. God bless you. Thank you so much!!!!
Great Job! I have been taking photos off and on for several years really never taking the time to understand what I was doing. So far everything has been easy.
It is good to understand what is happening while taking photo
Just read the first paragraph and noticed a mistake. Violent is the strongest or most energetic of the visible light spectrum and red is the weakest or least energetic.
Thanks for clarifying the physics Jason, we’ve double checked the data and corrected the article.
Thanks for the latest update on this Article. Thanks Jason for correcting.
This is an eye opener.Thanx for the great work.
I started photography as a village boy at atender age am glad that ur article has contributed to my professionalisation in photography.
Great site! Just starting out with a Kodak Z950.
I was confused by focal length thinking that the focal plane was the
distance to the point of focus on the subject you were shooting and couldn’t figure out how it could be in mm.
In your picture I assumed the stick figure was the person taking the picture instead of the subject. Oops.
Maybe it would be clearer to embed the lens and plane portion of the drawing in a simple outline of a camera?
Or maybe just label the stick figure “Subject” and put a label
“photographer” to the right of the focal plane.
Keep up the good work.
From my point of View – you have created lots of photographers by providing this course … Thanks mate for your contribution to photography world . I owe you….
Cheers,
Nisarg Shah
New camera. Easy! Just get on with it! Not so. There is always something in the photo that could be much better – so thank you for your lessons and no more short cuts for me!
I’ve just recently purchased a Sony DSLR a300. I was searching the web for a photo course that would give me some simple and quick tips on producing good quality photographs. I am thrilled that I ran into your site. Simple, clear, and concise, without all the fluff that a lot of other places that I have tried to learn photography at. Thank you for providing this information. I will be going on.
OMG! Your classes are awesome. I thank God for blessing you with this opportunity to help others with your gift in photography. I want to thank you so much. All of this information is wonderful. I will keep studying and practicing. Thank you. May God continue to bless you and your family.
The first paragraph says:
“Light is the visible portion of the electro-magnetic spectrum. The spectrum starts from red, the weakest of rays, all the way to violet which is the strongest of rays.”
This implies that the electro-magnetic spectrum “starts from red, the weakest of rays, all the way to violet which is the strongest of rays.” To this is not fully correct. There are many more wavelengths on the em spectrum outside of the visual range, as well all know. To be more accurate, you could say:
“Light is the visible portion of the electro-magnetic spectrum. Light energy ranges from red, the weakest of rays, all the way to violet, the strongest.”
Sorry if someone already pointed this out above, I didn’t take time to read all the comments. Maybe I’m a lame engineering student, but it was hard for me to read past this statement and focus on the article.
Thanks for the site, continuing to explore.
Thank you for giving me something to start my photography interest. I’ve a lot to learn I can see straight away
Being totally new to photography I’m very appreciative that you can give me these lessons
Thanks a lot for enlighting the concept of light for new to photoghraphy like me
thanks again
Great site, great info. I am a beginner at this, but love what you have here!
being retired, but working in the Graphic Arts arena for 30 years, I am very familiar with light and its properties.
This is very helpful as a starter photographer.Thank you.
P.S Now I need to get a good camera
Good camera’s can be found under the best selling DSLR’s or Best Selling point and shoot cameras. This should help with your comparison.