I have just gone from 1DMKIV to a 1DX. I know the files are a little bigger but in a speed test converting 50 raw files from both cameras into jpegs the MKIV's took 3min 20sec and the 1DX took 4min 30sec around 35% longer. Any ideas why or how to optimise ACR preferences. I have notice whilst converting both sets of images only 50% of the cpu is being used. All other programs were shut down and cache purged. Cheers for any help
Without knowing which processor you are using and which version of ACR, that is like asking how do I tune up my car. Is it diesel or gas, PC or Mac. How many threads, is OpenCL available? Which video board. ETC.
I think that Lr does not use all available cores for file access but it does use them for at least some other processing. Ps is much the same in that regard.
Apart from file pixel counts there may be a difference in the default processing option for each camera/ISO combination.
I suggest that you opt for minimum previews as a default, and apply no sharpening or noise reduction. That will speed things up considerably. Then, when you browse the images and apply any changes you won't be wasting the initial time taken to create high quality previews - do them after you've made the basic changes and selected which images to keep. Leave the sharpening and NR until you are done with the bulk of your file browsing and selection because once you apply them there will be a considerable slowing down in Develop module and to some extent in the Library module too.
