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John Rostron

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About John Rostron

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    : Essex

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  1. I don't have any trouble with my Sony .awr files. Please post screenshots of the raw file (both undeveloped and developed) and one of the .jpg file. Please ensure that all three are viewed at 100%, otherwise you cannot really compare them. John
  2. John Rostron

    Slide scanner direct

    Thanks for the link @PedroOfOz. If I come up with anything artistic, I will contact them. As I said earlier, what I have so far is proof of concept, but I think the field is worth exploring, if rather messy! It reminds me that in my youth, my scoutmaster's stepson was keen on artistic photomicrography. He went on to make a good living from it. See his website. John
  3. John Rostron

    Slide scanner direct

    @v_kyr When I worked at a university, I used the FH-G1 for scanning slides of both histological sections and whole mounts of tiny animals for my lectures and on-line teaching. I had the resources there to prepare my own slides that would fit into the mount. Having retired, I do not have these resources. I bought some slides and cover slips for a modest amount. I tried placing a subject onto the slide and added some water and a cover slip. I found that if I tried to push this into the FH-G1 mount, it pushed the cover slip off the slide! Thus I ended up pushing the slide in first and then adding the subject, some liquid and the cover slip. I also suspect the performance would be enhanced were I to use a mounting medium with a higher refractive index. I really need to find some subjects that are thinner than those I have been using. On a separate issue, I have used VueScan to do the scanning. I have tried SilverFast, but this has consistently produced corrupted images which I will report to the manufacturer. (It works fine with film slides.)
  4. John Rostron

    Slide scanner direct

    A couple more. From the front drive, a scrap of moss. You can see the long awns on the 'leaves' A scrap of Celeriac peeling from preparing lunch. You can see the cells. The dark lines are vascular bundles. John
  5. John Rostron

    Slide scanner direct

    I have often used my flatbed scanner to directly create images of flat objects such as leaves, so I thought I would have a try with a slide scanner. When I retired, I was able to keep some of my computer hardware including a microscope slide holder for my Nikon LS50 slide scanner. I have been searching rather desultorily for a suitable subject to scan., The problem is that I have to first place the microscope slide in the holder, then add the subject, then a cover slip. I cannot push a loaded slide into the holder. I recently came across this subject. It was an old flower head from some composite plant with many pappuses (parachutes). I was able to detatch a few of these and immerse them in liquid and add to my slide with a coverslip. I used the top layer from a bottle of Dentyl mouthwash as a liquid medium as it wetted the pappus nicely. Post-processing comprised a bit of sharpening and a Levels adjustment. After much trial and error I managed this. It is hardly a fine photograph, more a proof of concept. I will keep hunting for a suitable subject. January is not the ideal time, but I hope to find a small skeletonized leaf. John
  6. I just searched for "Clean selection" and there it was. You cannot delete a post, but you can request that the Mods do so for you. John
  7. This appears to be a repeat of your previous question here John.
  8. As @GarryP says, It should´╗┐´╗┐ work as you would expect. If not, try Layer > Rasterize. Was your original layer an Image layer or a Pixel layer? John.
  9. To straighten a Pixel layer, you just use the Crop tool. On the context toolbar, choose [Straighten]. Then click on the two ends of any tine that should be horizontal (or vertical). On the second click, the image will be straightened so that this line should now be horizontal. (or vertical). I use this extensively to correct scanned text or music. John
  10. Again, I'm sure it is the Operating System that is applying the descriptors for the file type, although this descriptor might have been set when installing Designer. You can change this in the OS. You don't say whether you are using Windows or MacOS. Can you see the filename suffix? I know that Windows hides this by default. If you look at the file Properties, this will tell you the file type. John
  11. @carl123, I have just been trying your macro (in 1.7). As applied to a single image, it works as described. When used in a batch job, it has no effect. The output files have the same dpi as the input. John
  12. John Rostron

    Dodge and burn

    Thanks to @ianrb and @RNKLN for these. I tried to create a macro but stalled when I tried to second layer down after setting the mask on the top layer. I tied @RNKLN's macro and it works. John
  13. John Rostron

    Photos developed and optimized with AP

    It is nice to see sets of animal pics in the Share your work forum. You seem to have posted a duplicate pic on October 3rd. Is that a Takin? I have never seen one in a zoo. John
  14. John Rostron

    Shameless dog pics (+bonus cats!)

    Nice set. I especially like the last one. John
  15. There is a discussion of this here. In that thread @carl123 provides a macro to reset dpi, but I have not tried it. John
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