Originally Posted by
Geoff F
Firstly, Izzie, when doing a simple two Raw conversions from one shot I just stack the images and merge by hand using layers and masks.
When shooting two or more shots intended for merging it is a bit different. In the simplest cases I simply change the focus point and shoot. Sometimes this change can result in different camera settings which may produce problems; so sometimes I have to meter the scene and set the camera with manual settings.
I normally shoot in aperture priority with a fixed Iso so only the shutter speed can change. But just a slight change here can occasionally result in substantial brightness differences between shots.
On a few occasions I need to have a difference in brightness levels so I am producing something of a HDR effect plus different focus points. This tends to get a bit tricky.
When processing the Raw files from a simple two different focus points shots I adjust the first image in ACR then use Select All Images and Sync All Images then transfer to the main edit window. Sufficient space needs to be allowed for movement of one image during the Auto Align stage of processing. Which means a final crop is required after the Auto Blend procedure.
The same options need to be considered when using other merging software or doing a 'hand made merge' with masks.
It doesn't matter which order you stack the images for auto merging although if doing this manually I normally like to have the 'most successful image' at the bottom of the stack to create a 'baseline'. Which is the way I normally produce my hand crafted HDR merges; starting with the 'normal' image at the bottom then adding the over and under exposures above that baseline. So only those layers get masked.
The Auto Align and Auto Blend options with the later Adobe CS or CC software is very effective - usually.