Search found 581 matches

by soldevilla
Mon Jun 17, 2019 2:15 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Sand
Replies: 8
Views: 1522

Sand

A friend has given me a small bag of river sand of a suspicious reddish color. Once examined in the microscope and separated some grains, we have some pretty almandine garnets.

Image
by soldevilla
Wed Jun 05, 2019 3:10 pm
Forum: Equipment Discussions
Topic: Automatic stacking focus
Replies: 4
Views: 958

A friend has lent me a TG5 and this model allows you to focus far away. But it still does not use JPG at full resolution or RAW

Image
by soldevilla
Mon Jun 03, 2019 12:24 pm
Forum: Equipment Discussions
Topic: Automatic stacking focus
Replies: 4
Views: 958

Yes, I've seen it already. but it does not save nor raw nor even jpg at full resolution. Still missing to offer the benefits I expect. What I have discovered is that there are Olympus cameras of higher level than if they fit my desires. What does not fit is with my VISA. :evil:

Thanks
by soldevilla
Mon Jun 03, 2019 7:15 am
Forum: Equipment Discussions
Topic: Automatic stacking focus
Replies: 4
Views: 958

Automatic stacking focus

I have heard about the Olympus TG4 camera doing focus stacking automatically. But I read that this is a usable feature only in macro mode. I am very interested in being able to use an automatic stacking focus in studio photography of ceramic pieces, but I have not found anything about this. Does any...
by soldevilla
Sat Jun 01, 2019 12:36 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: new mineral pictures
Replies: 5
Views: 3044

Fluorite, sphalerite and yes, piromorphite. All samples from Euskadi, Spain.
by soldevilla
Fri May 31, 2019 12:11 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: new mineral pictures
Replies: 5
Views: 3044

new mineral pictures

This weekend I was able to take some photos of minerals. I still try to define what is the reason that worsens my photos when I use x20 or more amplification. I am really pleased with the results that I get with the x4 and with the x10 (despite being the x4 is an unmarked Chinese brand). But when I ...
by soldevilla
Sat May 18, 2019 2:14 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Manganite
Replies: 3
Views: 1550

I know the difficulties of photographing minerals with very reflective facets (and which are the ones we like the most). I like the control of brightness that you have achieved, sometimes it is really impossible to achieve the appearance, brightness and transparency of some minerals.
by soldevilla
Mon May 13, 2019 8:16 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Wavellite
Replies: 3
Views: 1707

Wavellite

FOV 4mm, Nikon x10. The most difficult thing is to avoid dominant color in this colorless mineral on a black background. (and clean it...)

Image
by soldevilla
Sun May 12, 2019 1:46 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Trying to improve
Replies: 2
Views: 2570

Thanks, Pau.
My 40x is a Nikon M Plan 0,5 ELWD. And the last image, with the Rodenstock 180 is below. The FOV is 0,7mm. and it is overproccesed, I use deconvolutions, Photoshop was not enougth...

Image
by soldevilla
Sat May 11, 2019 3:54 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Trying to improve
Replies: 2
Views: 2570

Trying to improve

After a season dedicated to astronomy I have devoted recently to discover how to increase the resolution of my pictures. I love those images that have no overflow of color that show good sharpness. I do not complain about my results, but I see better images than mine and that pushes me to investigat...
by soldevilla
Sun Feb 10, 2019 3:34 pm
Forum: Equipment Discussions
Topic: Laser or Waterjet cut metal parts (Europe)
Replies: 2
Views: 2649

I have a lot of experience (too much years :smt010 ) working with laser cut parts... What do you need? i'm located in Barcelona...
by soldevilla
Mon Jan 21, 2019 4:30 am
Forum: Equipment Discussions
Topic: Minimum size of optical breadboard
Replies: 34
Views: 8785

Looking at the dimensions, it seems like it should be possible to expand some of the M6 holes into 1/4" threaded holes. Or, to avoid messing with the breadboard, turn the 1/4" threads on the flash holder into M6 threads with a die. It seems like it should work. Anyone tried this? I have arranged M6...
by soldevilla
Tue Jan 15, 2019 4:10 pm
Forum: General Discussion Forum and Community Announcements
Topic: searching a formula for a barlow
Replies: 8
Views: 3359

Thank you. I am talking to a friend about eyeglass lenses. I tried, many years ago also, a long telescope of 2 meters to have the vision offered by the old single-lens telescopes. I used a lens for myopia, but the vision was horrible, it looked like a fresnel. That's why I was looking for another al...
by soldevilla
Tue Jan 15, 2019 12:52 pm
Forum: General Discussion Forum and Community Announcements
Topic: searching a formula for a barlow
Replies: 8
Views: 3359

Does anyone know where to buy simple lenses, flat concaves, cylindrical lenses to correct astigmatism? I bought in Surplus Shed but since they changed the website I can not find anything ...

Thank you