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Playing around with Light and Background

Posted by Volker Betz  
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Volker Betz November 05, 2011 10:25AM
Hello,

Recently I improved (I hope so) my table top arrangement in order to have space also for larger specimens. This can be used in several ways. One ist with a repro stand for vertical use on top with ( reflecting) glass or some types of, mostly white, acryl glass. I use a Canon EOS 450 with a Canon EF-S 60 mm f/2.8 Macro Lens. All new pictures are a stack of 4-5 pictures with F=8 and exposure times from 1/20 sec. to 1/60 sec. Automated stacking with Helicon Remote.

I made, always from the same Rock Crystal specimen, a couple of pictures with variation of illumination and background.
Specimen size is 3.5x5 cm.

Normally I use black background (a black cloth in 30 cm distance below the glass surface) white background (back lighted opaque or semi transparent acryl glass). The arrangement also allows coloured or colour spotted backgrounds by either using colored sheets with spot lights or coloured foils below white backlighted acryl glass.

Black background (black cloth) in 30 cm distance
As before no reflection on prism
Blue spot in black background
Red background with spot
Green background with spot
Light green background (foil below back lighted white acryl glass



Variations of white background:

Pale, almost white background, version 1
Pale, almost white background, version 2
Pale, almost white background, version 3
White background



and at last

Version posted 2 years ago


All backgrounds are photographed together with the specimen (not replaced with software)


Which version do you like most, and for what reason ?

Volker



Edited 2 time(s). Last edit at 11/05/2011 11:02AM by Volker Betz.
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Keith Compton November 05, 2011 12:14PM
HI Volker
I'm impressed
Well done (tu)

Cheers
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Becky Coulson November 05, 2011 12:28PM
Hello Volker, I could spend all day looking at your photos! (Your zeolite photos are recognizable by their excellence.) You ask a difficult question - which do we like best, and why? I would answer in this way - it depends entirely upon the use of the photo. For a poster, a magazine article, collection photos or a website banner, I think the black or red backgrounds (without reflections) add both elegance and richness, and enhance the mineral's beauty. But for photos of minerals offered for sale, I am always happier to see neutral backgrounds like your pale, almost white (version 2) - because that is closer to how I will see the specimen when I receive it. I think the rich color (or black) backgrounds affect how we "see" the mineral, and how we perceive value. More photos welcome anytime, please! Best wishes, Becky
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Rolf Brandt November 05, 2011 01:50PM
Hi, I like "black backgr. - no reflection" and "white backgr." most. I do not like colours distracting from the actual sample, I think it influences the colour perception of it. Regards Rolf
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Rock Currier November 05, 2011 09:44PM
Many are good. Its easier to pick out the few I don't like so much, but if you don't have the others to compare against, they all pretty much get the job done. How about shooting us a few pictures of your lighting setup with some captions. Perhaps make it an article?

Rock Currier
Crystals not pistols.
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Volker Betz November 05, 2011 11:16PM
Hello Rock,

I ask because I know how I see pictures, but I am interested to learn how others see pictures and what is important for the viewers. Making pictures from the lightning setup is more difficult than making the pictures, but I am working on that.

Background is often a weak part of pictures in mindat, so an article could help. Therefore I would like what kind of background style attracts.

Most are attracted by the color of minerals, but if there is only shape and no or pale color, what can be added to the picture to to make it interesting for the non-experts ? Crystal-drawings ?, color spots ? captions ?

Volker
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Malcolm Southwood November 06, 2011 01:42AM
Hi Volker,

I find your series of photographs very interesting, largely because I am (gradually) trying to learn how to take decent photos of some of my own specimens.

I found the "blue spot in black background" particularly pleasing but, as a scientist, I'm inclined to agree with Becky in that the background artistry risks misleading the eye as to the merits of the specimen itself. I would therefore go with the "pale almost white version 2" picture, which I feel gives me the most objective sense of what this specimen would be like if I had it sitting in front of me.

You should keep in mind that my wife considers me to be the least artistic person she's ever met so, with that in mind, I'd not be at all surprised if others disagree. I guess to some extent the answer will depend on what the picture is to be used for.

mal
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Debbie Woolf November 06, 2011 02:57AM
I do like the blue spot, it enhances the overall view & I do like the light reflection look.

:)
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Dominik Schläfli November 06, 2011 05:51AM
hi volker,
i'm not really happy with any of them: the uniform neutral ones look dull, the colored ones tacky. one category of backgrounds is missing in your test, the low saturation colored background: see Amir Akhavan's lightly smoked quartz photos (Thomas Schüpbach also gets it right. for examples of what not to do , see jose manuel sanchis or stefan weiss). A small dash of complementary color is sufficient to enhance the contrast with the mineral. a wider variety of gradients is also worth exploring and showing. the spot on the apex is one of the less subtle aproaches.
best regards,
Dominik
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Becky Coulson November 06, 2011 01:09PM
Hello Volker, you make a good point in asking what might attract or assist non-experts (like me). Referring again to your zeolite photos, the dark backgrounds and lighting techniques are helpful in seeing/understanding crystal structure, especially in small and/or colorless specimens - I have learned much by studying those photos and their accurate, factual descriptions (rather than a string of superlatives), and thus my own interest in these minerals has grown. Sub-photos with crystal faces outlined are highly instructive, and good measurements are essential. So, again - for display and for articles, rich color and striking lighting techniques can add much. But I emphasize again the difference in using such enhancement for minerals offered for sale. On a few occasions, I have received minerals which were so highly back-lit, or made to look superb by photography, that they simply had little resemblance to the mineral in hand in ordinary light. Becky
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Robert Simonoff November 06, 2011 04:33PM
Hi Volker! Thanks for the pictures. I would love to see your setup, but wanted to try to answer the question you asked as well.

A few things I wanted to point about the pictures in general that affects my thoughts of them regardless of the background coloring and highlights:

Consider "Black background (black cloth) in 30 cm distance" and "As before no reflection on prism." As you point out, one has a light reflection on the main prism. Some of the colored pictures have the light on the front prism and others don't. I personally feel that the light reflecting on the front prism takes away from the piece a great deal. My goal in looking at a picture is to get as much a feeling about the mineral as possible, so anything that takes away from that is less desirable.

In "Black background (black cloth) in 30 cm distance" you can see the bottom of the mineral clearly, but in "Green background with spot" you can't. I prefer the lighting to show the while piece.

Comparing "As before no reflection on prism" and "Red background with spot" you can see a vertical transparent area in the Red one and not the other. I like see that this exists, I think it helps me get a much better feeling for the piece. There are two factors that come into play here. Some of the pictures it is caused by a slight rotation of the piece and in other pictures it is the glare off the front prism face. In either case, I prefer to see the clear spot.


On to the specifics (I will try not to repeat the points above)

Black background (black cloth) in 30 cm distance:The background is fine for me. This picture does suffer from some of the points mentioned above

As before no reflection on prism: The color contrasts enough with the quartz and inclusions that I feel like I can see everything well, given the general comments at the top.

Blue spot in black background: The color contrasts enough with the quartz and inclusions that I feel like I can see everything well. The spot doesn't bother me as long as I can see the details of the mineral. I would prefer the issues mentioned at the top to not detract, however.

Red background with spot: I debated as to whether the "artsy" background bothered me, but I don't think it does. This does show the form of the included chlorite (?) much better that the green background because the background color is dissimilar to the chlorite. It shows that there are areas with more chlorite and areas with less, and the background highlights their shape.

Green background with spot: After looking at this and the red one side by side, I realized that the included material (chlorite?) is not just a transparent cloud, but has internal shape, form and clear areas. You can't really see that in this photo as dramatically, since the background color is so similar. I do prefer to see these details.

Light green background (foil below back lighted white acryl glass: The included chlorite does not stand out as much with this background.

Pale, almost white background, version 1: The background color seems to take away from the mineral. I feel like I have to work harder to see the mineral. It seems to get lost.

Pale, almost white background, version 2: The effect of losing the mineral in the background is greatly reduced as compared to "Pale, almost white background, version 1" for me.

Pale, almost white background, version 3: Elicits a finger nails on the chalkboard type of feeling or that feeling you get when two adjacent keys on a piano are struck. :-)

White background: Suffers the same as "Pale, almost white background, version 1" for me.

Version posted 2 years ago: Suffers the same as "Pale, almost white background, version 1" for me, but in an opposite way.


So...

I think my favorite would be:
The blue background, rotated to show the clear area and no reflection on the front prism face
The red background with a little more light to show the bottom
Pale, almost white background, version 2 if rotated and had no reflection on the front prism face

I would need to see these variants to know which I liked best among them

Bob (not the artist in the house)
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Volker Betz November 06, 2011 07:03PM
Hello all,

Thank you very much for the interesting comments. I work on a website to show the modified setup I am using now for "whole specimen" photography.

In the mean time for Dominik:

Pyrite with some bue spot


Pyrite, black only


Is this a version you have in mind ?

I look forward for further comments. My personal preference is to show the features of a mineral and its shape. But it is important for me to know what viewers have in mind looking on a picture. " Extra" colors in a picture is not my preferenece, but I recognized that it plays a role and i like to understand this.

It looks like that some see first colors and then shapes. Recognizing shapes without color seems to be more difficult.

Regards

Volker



Edited 1 time(s). Last edit at 11/06/2011 07:08PM by Volker Betz.
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Jolyon & Katya Ralph November 06, 2011 07:55PM
As an aside on this topic, I prefer plain backgrounds without colourful spots.

Why?

Because I have been testing for some time technology to search for similar photos - so if you like one particular photo the system can find similar photos (not necessarily the same mineral, but photos that are visually similar).

These coloured background spots really mess this up, and so far this is one big reason why such as system doesn't work very well on mindat.

Jolyon
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Michael Shaw November 06, 2011 09:35PM
Hello Volker,
Personally, I prefer the last photo on the black background. To me, what makes this specimen special is the chlorite inclusions. Many of the photos do an adequate job of showing the shape, quality of the crystal faces, etc., but the last photo does the best job of allowing one to see into the prism and view the inclusions.
Michael
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Rock Currier November 06, 2011 09:38PM
Volker,
I tend to look at mineral picture and try and understand what the mineral actually is and looks like, even if it is a ratty picture. A ratty picture of a great specimen does not make it any less of a great specimen. I tend to think that many specimen photographers try and make their specimens look better than they really are and try and bend the image to achieve that goal. Photoshop can do wonders for the way a specimen looks, but personally feel that its users usually over do it. But that's the way people are. We usually try and make things look better than they really are. A lady with make up and high heals and a snug sweater usually looks better to guys than one without. We can't help ourselves that's just the way we are built. That's why we clean mineral specimens and trim them after all. But how much enhancement is enough. How much fiddling with the colors in the back ground or the spectra of incident light or how much back lighting is permissible? The answer of course is that it varies with each person that looks at the picture. Add to that the variability of the way that our monitors show the images we put up on the net and I don't think that individual comments about which of several images of a particular specimen they like best has a lot of meaning. Is the best we can do a popularity contest? Perhaps it is. At any rate I think your pictures are fine.

Rock Currier
Crystals not pistols.
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Douglas Merson November 07, 2011 03:00AM
Volker,

For me it is toss up between the first and last quartz photo. The first as it shows the surface detail on the prism face and the last as it best shows the internal features. I am not a fan of colored spots.

Doug
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Volker Betz November 07, 2011 09:15AM
Hello Joylon,

your comment is intersting. In fact I am not a big fond of coloured spots but it looks like that this kind of "make up" works if the picture or specimen or both is else not so appealing.

My question now: Do fading backgrounds the same mess with the search technology ?

Fading background from white to black


Volker
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Jolyon & Katya Ralph November 07, 2011 12:57PM
Plain backgrounds are better, fading backgrounds are fine. But there are already so many with colourful backgrounds (including many of Jeff Scovil's excellent photos), that I fear a decent image search algorithm is a long way away.

Jolyon
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Volker Betz November 08, 2011 08:33PM
Hello Rock,
thank you ver much for your comments. They are helpful to teach me, that there are different ways to look at a mineral picture.
I can very well understand that you mainly see the specimen, its the way you are and have been sucessfull in the business. Take its as a compliment even I am not able to express that this way. Also understand that for me the specimen is only a vehicle to make a picture which expesses what I like to show. For that case I dislike (or to say it politcally incorrect: HATE) pictures of good specimens which are (technically) bad made. A photograph is a not only a documentation of any existing piece, it adds and carries the impression and and intention of the photographer,( if he has such ideas in mind). To make a specimen picture like at it is, without any enhancement is ...... I am not able to expess that well in english, at least boring..
The conclusion for me: A good specimen will not always make a good picture, but a good photographer can make a good pictures from a suitable anything. For me: If a spceimen looks like ist is in a photograph, its fine, but it may be look better.
Look a t the many pictures of women celebrities - it´s the way we are. Title pages sell.


Volker
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