Posts tonen met het label macro photography. Alle posts tonen
Posts tonen met het label macro photography. Alle posts tonen

donderdag 6 september 2012

macro photography and flash


Macro photography can be pretty light consuming. You want to maximize depth of field, so you close your aperture to f/11, or even smaller. To get to greater magnifications you might use extension tubes, reducing the light reaching your sensor as well. Or to get rid of the harsh shadows you put a scrim over your working area, etc. To put it shortly, some extra light would be nice.



The first time I encountered this, I was still photographing with a point and shoot. But firing the flash was no option, as I found out that the lens barrel was blocking most of the light. Unfortunately most of the on camera flashes will not be useful for macro photography because of this.

However, there’s also external flashes. I have always been very enthusiastic about external flashes, and the moment I started with macro photography I have been using them. Basically you can use them in two ways, on your hot shoe (on-camera) or external. First I will cover on-camera use.

On-camera use of our flashes is the easiest way of using them. If you use modern lenses and flashes they even communicate to each other, and make a good exposure. But even without this auto-exposure you are very well able to make good photographs. Typically the distance to your lens doesn’t change much, as you want to keep a certain magnification. So the area between the subject and your flash doesn’t change.
A commonly heard complaint about flashes is that they produce hard ugly light. First of all hard light can be really beautiful (but that will be another post in the future), but the light coming from your flash actually is really soft. Your subject matter is really small compared to your flash head, and your flash will be close to your subject, so the light from your flash is still able to wrap around your subject. I took this photo with my SB-24 mounted on my camera, with a diffuser dome.
As you can see, it doesn’t look like your typical hot shoe mounted flash picture, as the light is quite soft.






However, there are disadvantages, as your distance from flash to subject is very small, you will get fast fall-off. If your exposure mainly depends on the flash output, you will get dark backgrounds. You could search for backgrounds which are also quite close to your subject, which will catch more light. Don’t be afraid of distracting backgrounds, as they will be out of focus anyway, due to the small DoF.
Or you could make use of your ambient light. The photo shown above is taken 1 o’clock, in the harsh sun. Even though my flash is my main light, the sun increased the exposure on my background. (That’s why I like to do macro photography, since I’m able to control my exposures anyway, I can do it at any time of the day)

Off camera flash is another option. It can create more dramatic light, and I like it better than on-camera flash. However, compared to on-camera flash, you are less mobile, since you also have to move your light. Besides that, if your subject moves, your flash exposure will change as well. This can be especially difficult since most of us will be using non-TTL triggers / cords / non-TTL flashes. I just hope for the best, and try to move my flash along with my camera, and usually I’ll be all right. Don’t get discouraged because you blow a few exposures, because after some practise you will remember to move your flash.



Again, you don’t have to diffuse the light that much, although I like to diffuse it more. Soft light is more forgiving, and also will create less harsh shadows. (Again, the sun can be your friend and can fill up the shadows) As I use extension tubes, most of my pictures mainly depend on flash for their exposures. This can result in very dark shadows on the other side of your subject. (As you can see in the photo below) Normally an envelope put over the head of the flash is enough, providing very soft light.

So basically, if you want to be very mobile, or your subject moves a lot, mounting the flash on your camera can be a good option. But I prefer to fire my flash from a slight angle to my subjects, so when I can, I will use my flash off-camera. 


woensdag 2 november 2011

my thought process for this photograph




First I wanted to take a normal photograph of a mushroom nearby, but the flies kept bugging me. Then this little shroom caught my attention because flies were constantly sitting on it. I wasn’t sure what I wanted to do and decided to come back to this mushroom since it was near the entrance of the forest.

After 2 hours I came back and the sun was already setting and I cursed myself for being too lazy to figure out what I actually wanted. Than I remembered that I also brought a flash and triggers just in case I might run out of light.
I tried a test shot and realized that the light was too hard for this photograph, good thing I always keep an envelope in my bag as a reflector for macro photography. (if you take an occasional macro photo, put an envelope in your bag the next time you go out. They do not take up any space, but can save you, just like it did for this photo)

Instead of using the envelope as a reflector I pulled it over my flash to soften the light. I put the flash at a 90 degree angle from the camera and started to take some photographs. Than I accidently pointed my camera a bit at the flash and noticed the flare.
I thought it would be cool to make a dramatic photo with flare of a fly looking into the camera. I increased my shutter speed to decrease my ambient exposure to make the photo more dramatic and pointed my camera near the flash with envelope.

Unfortunately the flies would not look into my camera, but when I reviewed my shots on the computer I saw this one looking at the flare.

Thanks for reading,

Koen


dinsdag 10 mei 2011

Photographing ants and other small creatures who are stingy

As you can see I have some uploads in my stream containing ants. This species is pretty common in the Dutch forests, and they are known for their irritating bites. So how can you take photographs of these kind of creatures without getting attacked?

  • Look where you lay down, a lot of animals use the same route over and over again, so if you can avoid laying on their route you will have less animals on / in your clothes
  • Take a blanket: this is your first barrier of defense, ants which might be beneath you can’t directly crawl into your clothes. And if they try you can spot them easier than when they would sneak in your clothes via the forest floor.
  • Were plain clothes: it doesn’t have a real function except that it makes it easier to spot ants on your clothes
  • Move them: if there are a lot of ants on a specific route, and there were a lot of ants on a route when I took the photos of them killing larva, move them. Use a stick / piece of paper and move them out of the route. This way you get less animals around you, resulting in less stress. And you can move them to a spot where the lighting conditions are better.
  • Where long sleeves and pants: just as a second barrier of defense
  • Use an envelope to lighten up shadows
  • Sacrifice depth of field for a short shutter: I’ve been shooting at 160th of a second because these ants move incredibly quick, and better to have a sharp photo than a unsharp photo with perfect DoF.

donderdag 17 maart 2011

macro photography

As a frequent viewer of my stream you’ve probably noticed that I have been doing a lot of macro photography lately. This is mainly caused because I’m out of landscape subjects. Everything is really far away, or I have been there over 50 times with all the possible weather conditions. I just moved to macro photography because that’s a new world to me. And I thought it might be time to share some things I have learned.

  • Bring an envelope, seriously even if your bag is as full as can be there’s always room for an folded envelope. Since your photographing small things anyway you can use this as an reflector. As a bonus you can fold the envelope a bit creating a smaller part which is in the reflected light.


  • Don’t be afraid to get bit. This mind sound a little extreme, but if you’re calm on the ground and pay attention to any biting bugs on your clothes etc. you can keep the amount of bits to a minimum. But what might help is bring a sheet or something else to lay on. And if you’re from the Netherlands you’re lucky, if you’re bit by a red ant you won’t even feel it the next day. (I don’t dare to say anything about other countries though).
    • Be aware for ticks, check yourself after every photo session. To get a bite for a photo is one thing, but it’s something else to get lyme disease.


  • A bean bag is more useful than a tripod. You will be laying on the ground photographing things which are really low to the ground as well. It is hard to get as low with a tripod as you can get with a bean bag, and it’s more comfortable.


  • Shoot in bursts: this might seem weird, but if you don’t want to open up your aperture more / raise your iso but you do want to get a sharp photo of a flower swinging in the wind you can use the burst mode. Because the flower moves less fast at the end of it’s motion and than you will be able to get a sharp photo.



  • Look for points of attention. Because of the large magnification you basically take a landscape photo of a flower. It might not be clear to the viewer where he has to look at, so add something to the flower, like bugs or waterdrops.


  • Raise your ISO before you open up your aperture. Besides that it becomes harder to get things in focus, your DoF becomes also extremely small. Be sure that you use a adequate aperture for your main subject to be in focus.


And as far as I can help you with finding subjects, well just lay on the ground and look through your macrolens/ pimped lens. Virtually anything can become interesting, and there might just be something going on there with the bugs. All the bug photos you have seen here are taken because I was already laying on the ground.



Thanks for reading