EOS 5DS R Reducing size of RAW and JPEG images

[hvulpus]

Hi,

I'm off in France photographing Romanesque churches with a 5DSR which renders wonderful detail.  

I find that reworked RAW images, which seem to save as PSDs, can be huge, up to 130MB.  The RAWS are all in the 60MB range to start and the JPEGs in the 20MB range.

How does one reduce such large images to a manageable size, say, to send via email or use in Powerpoint?

Howard

[hvulpus]

Thanks so much.  I think I will not go to another program unless I cannot get the PS to work satisfactorily.  Will IrfanView handle RAW files?

Howard

[stevet1]

Howard,

Yes. Irfanview will handle RAW files. Just go to its download page and download the Plugins.

I haven't used it to edit RAW files yet. I use DPP4 for that.

Steve Thomas

[Waddizzle]

I don’t think you can reduce the size of your RAW files without compressing them and potentially losing data.  But you can significantly reduce the size of JPG files by simply reducing the bit depth.  

I don’t know how you plan to use the files.  Images displayed online typically have only 8 bits of color resolution.  

[Ron888]

Another vote for Irfanview. It's my go-to resizer for basic needs. Hit ctrl/r, select pixel dimensions or percentage resize.Easy as
If i want to fussy about image quality i'll use photoshop.First i'll resize the picture,then use the save for web function.(ctrl/shift/alt/s).A 'before and after' window will pop up.Play with the JPG quality slider on the right to get the result you want.It will show how many Mb the picture will be as you're doing this.
Hint: the highest setting doesnt always give the sharpest picture! I think it's due to different jpg compression settings working best with certain types of detail in pictures.

[hvulpus]

Dear Ron,  Thanks so much.  You are right about the sometimes lack of correlation between JPEG settings and actual appearance.  I had always thought this could be a function of computer screen resolution.

Howard