Search found 687 matches

by soldevilla
Fri Feb 03, 2012 4:01 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: new web
Replies: 3
Views: 1233

new web

Hello friends. I've been working on recently in several articles in which I collaborate by taking photomicrographs of minerals. Yesterday we published at last a new website where we will show our studies of mining sites we visited. It is an unpretentious site, but we have placed much illusion in it....
by soldevilla
Wed Feb 01, 2012 8:31 am
Forum: General Discussion Forum and Community Announcements
Topic: Posterisation At Low ISOs
Replies: 3
Views: 1150

The posterization is a problem of the images-bits. It is more easy to occur in an 8-bit JPG, but is no free of danger the 12-bit RAW or more.

In all smooth transitions with little color range is easy to discover posterized areas...
by soldevilla
Mon Jan 30, 2012 10:25 am
Forum: Equipment Discussions
Topic: 100x LWD?
Replies: 2
Views: 1124

100x LWD?

Somebody has tested a LWD like this?

http://www.ebay.com/itm/LWD-Long-Workin ... 20c14a10e9
by soldevilla
Mon Jan 30, 2012 8:29 am
Forum: Equipment Exchange
Topic: Exchange ring flash for macro
Replies: 0
Views: 1995

Exchange ring flash for macro

Some time ago I have gotten a ring flash Sigma EM 140 DG thinking about shooting my minerals without having to worry too much about lighting, but the results do not like me. The lighting is so flat that the relief of the stones disappears and as most of these are almost monochromatic, the result is ...
by soldevilla
Mon Jan 30, 2012 2:27 am
Forum: Equipment Discussions
Topic: Flash power
Replies: 15
Views: 3034

I use rechargeable batteries. I have two packs, one in the flash and the other in a charger. I have "burn" my first Yongnuo flash because I shot too pictures in a small lapse of time, when I shot for stacking. Now I shot a picture every 4" aprox., is a little slowly but I´m sure that I have no vibra...
by soldevilla
Mon Dec 26, 2011 1:34 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: idea to fight the diffraction?
Replies: 4
Views: 2477

I imagined that the vignetting and field correction would make that a solution so obvious was not good... Thanks, I save a lot of time testing it. :(
by soldevilla
Mon Dec 26, 2011 5:52 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: idea to fight the diffraction?
Replies: 4
Views: 2477

idea to fight the diffraction?

After carefully reading this thread, http://www.photomacrography.net/forum/viewtopic.php?t=14811&start=0&postdays=0&postorder=asc&highlight= I ask if anyone has considered to use a microscope objective of higther increase (ej. 20x) with less projection distance to get the magnification that provides...
by soldevilla
Sun Dec 25, 2011 4:56 am
Forum: General Discussion Forum and Community Announcements
Topic: Merry Christmas
Replies: 10
Views: 1891

I feel that was lacking in this forum a thread to wish a Merry Christmas and a better 2012 to all members of this fantastic community Image

Image
by soldevilla
Fri Dec 23, 2011 1:18 am
Forum: Beginners Macro
Topic: Starting out, next step, lens choice etc.
Replies: 23
Views: 9044

I use cheap microscope objectives in my photos. As Charles said, I can only use the 4x and 10x because the working distance is very small and the 20x is almost in contact with the sample to be photographed. They show no chromatic aberration but the spherical correction at the edges of the image is p...
by soldevilla
Tue Dec 20, 2011 9:39 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Eudialyte
Replies: 4
Views: 1836

Doug, if you are using a Levels or Curves layer to modify the contrast, do not let these layers in Normal mode, so put them into Luminosity. In this way the layer acts only on the component B & W and the color does not change.
by soldevilla
Tue Dec 20, 2011 9:28 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Circuit breaker
Replies: 10
Views: 10426

Have heard you about planned obsolescence?

This is a good example of a bad design of part ...And it seems very expensive replacement. It should not cost more than $ 20-25 ...
by soldevilla
Mon Dec 19, 2011 1:18 pm
Forum: Equipment Discussions
Topic: Cheap, cheap, cheap!
Replies: 25
Views: 7372

EPH! really there is much difference! But retouching eats all the memory in my iMac. :(

One question ... Is it possible to resize the Retouch brush? sure, but I do not find how to change that.
by soldevilla
Fri Dec 16, 2011 12:56 pm
Forum: Equipment Discussions
Topic: Cheap, cheap, cheap!
Replies: 25
Views: 7372

Have you got a photo of your setup? It might be useful to see how you're taking the images :) Also, how do you diffuse & reflect the light - and do you use a lens hood? I show my setup in an older post. Now I use two flashes and as diffuser I have a lot of white plastic one-use cups and I cut it as...
by soldevilla
Thu Dec 15, 2011 3:46 pm
Forum: Equipment Discussions
Topic: Cheap, cheap, cheap!
Replies: 25
Views: 7372

Thanks, Rik. Yes, I shoot with flash. I even left the room while doing the series of images. And I always shot at ISO 100, which is the lowest value that my Canon allows. I use Zerene, but I've only managed to use the method Pmax. Anyway, I have compared the image after Zerene with one of the indivi...
by soldevilla
Thu Dec 15, 2011 6:27 am
Forum: Equipment Discussions
Topic: Cheap, cheap, cheap!
Replies: 25
Views: 7372

Well, the door is now open ... I admire the quality and sharpness of many of the images published in this forum. And I fought with objectives and photoshop to try to get something. Maybe my camera is very old (Canon 350D) and some of my objectives do not have the best possible quality, but I have so...