Highlight Tone Priority explained

posted on 17th of june, 2014

Applies to: Canon EOS digital Rebel DSLR cameras, general concept applies to entire line of Canon DSLRs

There is a lot of confusion regarding the highlight tone priority and how it works. The internet is full of misleading and completely weird information on the subject while Canon does not actually reveal anything much in the camera user manuals. So here are the common questions answered very clearly as facts. I have verified these myself after consulting Canon's firmware operations and carrying out controlled tests.

Belief #1: No in-camera settings affect RAW file
That is absolutely wrong. There are settings that drastically affect the RAW file and produce notable changes in the file size and appearance. To make the best of your camera, you need to keep in mind what affects...

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Comments (3)

Posted by Darwic on July 15, 2014
Great and beautiful blog, very informative.
Posted by Vtr on June 21, 2014
Thanks for sharing... quite informative
Posted by Lenutaidi on June 17, 2014
Beautiful and useful blog! Beautiful images! Thank you for sharing!

This article has been read 787 times. 4 readers have found this article useful.

Action Photography - IS or not to IS?

posted on 26th of june, 2014

Action photography can include photographing and freezing the motion of anything that moves – and moves fast. There are plenty of situations that can come under the category of high speed action photography like sports and bird-in-flight situations, even rock concerts in dim light where the artists move at appreciably high speed. You may have heard that you do not need IS when working at fast shutter speeds.

Does IS even matter when shooting at very fast shutter speeds?

This article goes through the reasons as to why you should always keep IS on irrespective of the shutter speed you are working with when shooting action (not still subjects, though).

What is IS?

IS stands for “Image Stabilization” (a Canon term)...

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Comments (5)

Posted by Gmargittai on June 29, 2014
Thank you Pratik for answering my comment. It all makes sense. I have the IS mostly on. If I turn it off for tripod work, I tend to forget turning it on again when needed. I like the experience you proposed with the 10X magnification and manual focus.

Good blog. Very useful.
Posted by Onime on June 28, 2014
great info...... thanks for sharing :)
Posted by Robinstockphotos on June 28, 2014
Gmargittai: You can find answers to all these questions in my blog articles (written a while back). Actually as far as Canon is concerned, IS is most effective at reducing vibrations within the range of 0.5Hz and 1000Hz. Human hands can cause about 1 to 3Hz. A Cessna or similar flight system can cause around 10Hz to 50Hz. Vehicles too.
And if there is no vibration in this range, then you should turn IS off.
A tripod being shaken by winds is usually very low frequency and IS will make no difference. But handholding, assisted by a tripod or monopod means you still have some removable vibrations. THAT is the boundary.
A simple test can clear things up forever.
Switch to live view, turn IS off, set preview magnification 10x (on Canon) and see if the image on the screen shakes visibly. If it does, IS will help you. Otherwise not.

Comments (5)

This article has been read 1514 times. 3 readers have found this article useful.

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