Introduction To Canon EF Lenses

So I know that a lot of you have been asking me about EF Canon Lenses, so I starting looking for some really good information and this is what i found:

Let me know what you think, It highlights some very essential and important things about EF lenses.



An Amazing Photography Quote

Hey Guys!
I heard this awesome quote from a friend the other day, and I just had to share it with you. I goes like this….

“What i like about photographs is that they capture a moment that’s gone forever, impossible to reproduce.”
Karl Lagerfeld

I just couldn’t fathom how true and how dreamy it made me feel. The thought of a specific moment in time, frozen, captured, a still portrait to be looked back on in the feature. That is, in my option, an amazing thing. To be able to freeze a moment in time, a specific second, allowing you to forever hold that moment and go back to it whenever you want. Photography is such and work of art. It allows you to capture your imagination through the wonders of the world. The last part of the quote “Impossible to Reproduce”, I like to think that you can go back to that moment in time, anytime you want just look at the picture, and just like that, you there! But anyway I”m interested to hear your thoughts, so please, don’t hesitate to leave a comment.

Features of A Canon Lens

For all you photography newbies out there, I thought id take a minute and go through all the different parts and features of a Canon Camera Lens and their features. and There are Many parts to a camera lens. The picture below has each part of a camera lens described and labeled. I will take a minute to go through each one with you.

The Lens Mount

This is what connects the lens to the camera base, enabling the the camera to communicate with the lens. Not every camera lens can be connected to any camera base. It is a general rule to stick with the same brand as the camera base you have. So if you have a canon camera, you would buy a Canon Lens.

AF/MF switch 

This switch enables you to select either auto-focus (AF) or manual focus (MF) mode. Some Canon Camera Lenses even have additional options.

Zoom Ring 

This enables you to adjust the focal length length of your lens by rotating the ring on the lens barrel which moves the optical elements closer or further apart.

Focusing Ring 

This enables to to manually focus the lens. Most Canon Lenses have automatic focusing but there is an option to override the automatic focus in some situations.

Filter Thread  

Most Canon lenses have a thread of a specific diameter at the end of the lens barrel that enables you to attach different filters.

Lens Hood

Almost all Canon lenses are supplied with a “lens hood” to keep peripheral light from getting to the front of the lens, which is something called flare (not something you want)

Image Stabilization

The higher end canon lenses have a feature to switch from optical image stabilization modes. Most have two modes, one for general camera shake and one to correct only vertical shake when panning.

Aperture ring

This feature is positioned close to the lens mount, and allows you to set aperture manually on the lens rather than the camera.

Distance Scale

This feature allows you to calculate depth of field and it helps make use of something called hyper focal focusing. It allows you to maximize front to back sharpness.

I have just gone through all the basic parts and features of a Canon Camera lens, but there is a lot more complexities and a real science to Camera Lenses. If you want to learn more about the technology and science that goes into manufacturing a Canon Camera you should check out Canons Camera Museum web site for a nice graphic illustration of DO technology.

Features of A Canon Lens