Showing posts with label lighting. Show all posts
Showing posts with label lighting. Show all posts

Friday, March 30, 2007

Purple Haze

I stole the lightbox info from here and the photographing smoke info from here

Here's my ligthbox setup for smoke:

I've got a desk lamp and a slaved flash on the outside and a stick of vanilla incense with a black foam board background on the inside. People my not believe me, but I'm certain that the flavor matters :)

I think there are a couple of changes that I need to make though

- I really need much better light. the flash on the right is ok, but the lamp is pathetic. Stronger light would really help the smoke stand out more and would let my play around more with settings on the camera - especially faster shutter speeds

- I think I probably should have cut up the box lengthwise. The thing is that I'm getting a little more of the background in focus than I'd like. Part of that is because I'm not using a light sucking black fabric or something, but I think more length would really take the background way out of my focus area.Maybe I can bring the incense out a little further...

Ok, so I shot a couple quick ones so we could play with the photoshop side of this thing. The smoke is so finicky, and it moves so fast that I usually take a lot of shots to get one or two that have a couple of interesting parts. Click your lens onto manual focus and move the lens around to find the eddies. Don't worry too much if it seems you're getting a lot out of focus.

Here's a I got shot out right off the card:

Interesting but we can do better. I'll bring it into photoshop and crop it up to isolate the lower right hand corner.

The most fun is fixing the levels (Ctrl-L)

First click on the little eyedropper with black ink. That'll tell photoshop that you are going to select what you want to be the blackest of the black in your image. I would chose the little section marked 2 in the image. Then click the eyedropper with white ink and select the part of your image that you want to be the whitest of white - I picked the part marked #3, but it would probably be better to choose the part under "Click" in the photo up there. Play around with this a lot and you'll get a lot of fun possibilities.

That'll give you something like this image which has a nice black background (although I'd like it a little more black in the upper right), and a really fun near-oversaturation in the curls down on the lower right :


Which is fun, but we can make it more fun. I accidentally shot this with an ISO of 400, so it's noisy. I'll do a little smart blur to even it out a bit.

The color is easy. Just go to the color balance (Ctrl-B) and fiddle with the bars until you dig it. I thought the green worked well



The other thing you can do is color invert the image (Ctrl-I) before (or after) you fiddle with the color balance. That gave me a fun purple


Then you save it and pop it up on flickr and your 365 blog and it's your daily photo and a how-to walkthrough!

Like I said, I'm still not happy with a lot of the process and I think this can be made a lot better. So give it a shot and tell me how you make your smoke cool!

Rhymes With Orange

Ok, I stole the lightbox how-to from here, but here's the rest:

backlit orange

Step 1:

Cut a hole in the box.
(har har har)

Honestly, I cut three holes in the box, put paper towels over the holes to diffuse the light I'll be adding. For the backlighting, I hung another sheet of paper towel on the inside of the back of the box. All I did then was aim all the lights at the background so the light would bounce and hit the back of the clementine.









I carved up the thing so there was a slice sticking up, but it would still stand up.


















I took a really quick shot with my non-macro lens and this is what it ended up looking like. It's blurry and it ain't nearly as good as the earlier one, but you get the idea. My clementines are starting to get a little ragged too. I think I need to finish 'em off.


Next post will be the smoke walkthrough

Monday, March 26, 2007

Lightboxen

Scrivener asked about the homemade lightbox I made for the smoke pictures. I got the ideas here (lightbox) and here (smoke). So here's what I've got:

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It's basically just a cardboard box with windows cut out on the sides and top. I draped paper towel over the windows to act as a diffuser until I can get something a little better (tracing paper? sheet?). Inside on the back and bottom are chucks of black foamboard. Then there's a lamp on the left and an old slave flash on the right in addition to the diffused hotshoe flash on the camera itself.

The setup didn't work that well actually though. I think with a little tweaking it'll get better. The main problem was that there still wasn't as much light as I would have liked for the smoke. The on-camera flash was also too direct, even with my bounce diffuser. I think the answer is to get a shop lamp, or something like that - something with a little more umph than my little desk lamp.

As for the smoke itself, I used incense sticks poked into the cardboard. Camera settings were ISO100, 1/250 and my best ones came out at about f11 or f14, but I'm sure that could be changed a lot.

Finally I popped it into Photoshop and fiddled with the colors. Fair warning - clean your glass. every tiny little dust speck will show up :)

Anyway, if you aren't checking out my photo365 or flickr pages, here's some incense smoke!
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