Changing to Raw format - Canon 400D

[JOHN WEST]

Is there a particular size memory card to use or will any size be ok for Raw,as I have looked how to change from jpeg before starting to take shots with an empty 1gb card but can`t find how to change.I`ll have to dig out the manual.

[matt_xyz]

I normally use 2gb cards, any smaller and you won't fit many shots on. Any larger and you risk having 'all your eggs in one basket' should the card fail. I can fit around 200 RAW shots on a 2gb card.

To change from JPEG to RAW on the 400D simply press menu, and then scroll down to select 'Image Quality'. Press 'set' to see the various options, one of which is RAW.

Matt

[JOHN WEST]

Many thanks I`ll try that when I get home

[Hobjob]

Originally Posted by matt_xyz

To change from JPEG to RAW on the 400D simply press menu, and then scroll down to select 'Image Quality'. Press 'set' to see the various options, one of which is RAW.

Matt

May be better to choose a RAW + JPEG, then you can look at things in JPEG without conversion - and hit the delete button more quickly

[Roy C]

Originally Posted by Hobjob

May be better to choose a RAW + JPEG, then you can look at things in JPEG without conversion - and hit the delete button more quickly

I always view the RAW files (and delete if required) before conversion by using Microsoft's RAW veiwer or Canon's Zoom Browser therefore shooting in RAW + JPEG for this purpose is not necessary.

[eeyore]

Originally Posted by Roy C

I always view the RAW files (and delete if required) before conversion by using Microsoft's RAW veiwer or Canon's Zoom Browser therefore shooting in RAW + JPEG for this purpose is not necessary.

my interpretation was that hobjob meant in camera - where jpegs (particularly if you are shooting jpeg small for this purpose) will be far quicker displayed on camera playback

the only thing against this approach is that t will reduce the capacity of your memory card still further , and 4 +8 Gig cards aren't cheap.

[Roy C]

Originally Posted by eeyore

my interpretation was that hobjob meant in camera - where jpegs (particularly if you are shooting jpeg small for this purpose) will be far quicker displayed on camera playback

If you are shooting in RAW + JPEG then the camera write time is not any quicker than RAW only. As for displaying the pics on your camera once they have been written (camera playback) JPEGS are no quicker than RAW'S to display. Infact I think you will find that even if you shoot in RAW only these are converted to jpegs in Camera for playback purposes.

[WestLothian]

The RAW files often have jpeg content stored "embedded" to enable thumbnail viewing in windows etc. I have been told by a very reliable software delevoper that it is this jpeg file that the Microsoft Viewer displays when reviewing Nikon NEF's.

I tested this recently by using a RAW batch editor to remap a stuck pixel on all the files in a folder (166) the Microsoft Viewer still showed the hot spot but it was invisible in Adobe, Bibble and CaptureOne.

Canon's RAW may be different in this regard.

[Roy C]

I have now found the info for the Canon 400D (same for most other Canon's) and If you shoot raw only, there is a med jpg embedded in it and this is what the camera uses for playback in the camera so as far as display speed is concerned there is no advantage whatsoever in shooting RAW + JPEG. It is this same embedded jpg that the Raw image viewers use to view the file before comversion.

[Hobjob]

Originally Posted by Roy C

I have now found the info for the Canon 400D (same for most other Canon's) and If you shoot raw only, there is a med jpg embedded in it and this is what the camera uses for playback in the camera so as far as display speed is concerned there is no advantage whatsoever in shooting RAW + JPEG. It is this same embedded jpg that the Raw image viewers use to view the file before comversion.

Thanks for that - very interesting and useful, if I can remember it!