Both Helicon Focus and Zerene Stacker have their own retouching abilities. If you do not want to handle the spots in Lightroom or you find that Lightroom automatic handling of hot pixels missed some of them. This is the result using first Helicon Focus then Zerene Stacker – the problem is solved. My camera sesnor is micro 4/3 normal output 3888 by 5184 px.When I am done with the grey card photo, I copy the settings to all the photos in the stack. It is the translation of this helicon OUTPUT when it is returned to LR that is the problem I am facing so I do not htink it is an issue with the original images since the DXO interpretation of the same dng file out of helicon shows the full imageĪ freind has wondered if the issue migh tbe that, for some reason, LR is applying an automatic lens correction on opening the dng? We know the fiels LRSENDS to helicon are OK as helicon produces complete output I other words the camera (olympus OMD Mk II) is producing the expected images and these are being handled as expected by Lightroom UNTIL they come back from Helicon as dng's. In this case, the focud stackign process works fine and produces a focus stacked output that looks fine in Helicon (just like the jpg I showed that had been through DXO) and reflecting the stacking from the 7 startign images. Helicon then performs the focus stacking in one or more ways of my choice to produce a focus stacked output result which I can then save as a dng for return (automatically) to lightroom. I am afraid I was not clear - the process is to send focus bracketted files (in this case 7) from LR to Helicon - this is doen by a dng export process proviided by Helicon. Which camera do you have and what is its native sensor size?Ĭlick to expand.thanks for the suggestion The two different sensor sizes listed by you suggest that you have a 4:3 camera and the missing pixels are only 12 pixels from each dimension This missing pixel on the edge is not uncommon for many sensors for most cameras And does not seem to be the source of your missing 130-140 pixels. The difference seen in the crop tool in Lightroom develop is listed as "Original" (3:2) and "As Shot" (16:9, 4:3 etc.) If you export using the "As Shot" setting a crop will be applied. RAW files from such cameras always record the full 3:2 sensor but record the aspect ration setting of the shot. Some Cameras can Crop in camera to produce 16:9, 4:3 aspect ratios from a standard 3:2 aspect ratio sensor. If I understand this correctly, Lightroom is applying a crop before exporting. When Open ed by Helicon Focus, the images is cropped by a number of pixel on the bottom and RHS. If I understand what you are saying, Lightroom is creating a DNG image to pass to Helicon Focus. I must be doing something very stupid or forgetting something basic about importign in LR - any ideas? I have attached jpg exports showing a) one of the oiriginal stack of 7 images to show the original field of view b) the result of importing the dng into LR directly and c) the result of opening the dng in DXO PL and passing back throguh PS to LR as a PSD I hope soemoen can tell me what I am missing here and how the LR dng import algorithm can "crop" a dng file differently from the DXO tool but still report the same pixel numbers - I must be missing something very simple here. Using the PS ruler very roughly, it appears that the "opening helicon dng directly in LR version" removed approximately 130- 140 pixels from each edge while still reporting the image as having identical numbers of pixels as the psd version which shows a lot more of the original field of view. I saved that as a tiff, loaded it into PS and saved it to LR as a psd and the image is now complete in LR and still reporting as 3876 by 5172. This was a surprise (and extremely annoying) as the cropped areas were visible in Helicon rendered images and the cropped bits were important elements of the compositionĪfter much messing about, I opened the Helicon output dng's in DXO photolab and obtained an image that showed the full original area visible in the Helicon output screen BUT ALSO REPORTING AS 3876 BY 5172 PIXELS. However, I found the resulting DNG - reported in LR as 3876 by 5172 pixels - had "cropped" key areas off the bottom and RHS. I used Helicon to stack a set of 7 images (3888 by 5184 px) using the export to Helicon as DNG plugin from lightroom and exported the three rendered outputs (different rendering parameters) back to LR.
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