Author Topic: Have you been out with your camera today? (Read 248053 times)

matthew · « **Reply #250 on:** 11 February, 2013, 01:27:17 pm »

Clever timing of the drops from the burette so that the second drop lands on the top of the splash from the first.

David Martin · « **Reply #251 on:** 11 February, 2013, 01:50:32 pm »

That is what the arduino is doing. When the camera shutter is tripped it causes a signal on the hot shoe. This triggers an interrupt ont he arduino which opens and closes a solenoid to allow a drop to pass through, waits the right amount of time and then triggers the flash.

I set the arduino program to increase the delay between drop release and flash by 5ms each photo so could then calculate how long between drops I needed to get them to collide exactly where I wanted (ca 100ms for reference[1]).

About 250ms later the flash fires. +5ms each shot so I can easily build up the stopped frame animation. Overall we shot about 400 frames in test and final.

[1] remembering that that time includes the drop formation time so is from start of cycle to start of cycle.

Jaded · « **Reply #252 on:** 14 February, 2013, 07:12:57 pm »

clarion · « **Reply #253 on:** 14 February, 2013, 09:20:42 pm »

Wander round your local park?

Jaded · « **Reply #254 on:** 14 February, 2013, 10:36:07 pm »

The tigers used to be exercised on the beach nearby.

All the photos except the owl were taken through fences like the Mike Tyson monkey is scowling out of.

fred the great · « **Reply #255 on:** 15 February, 2013, 03:00:14 am »

You moved to Affrika then

JohnP · « **Reply #256 on:** 15 February, 2013, 05:37:22 am »

My brain has died again. I have an image on flickr that I want to post here. Do I put the link in img tags or url tags? Can I include an image straight from my pc or does it have to be on flickr or similar?

http://www.flickr.com/photos/sprinterpics/8474962506/

IMG attempt

URL attempt

http://www.flickr.com/photos/sprinterpics/8474962506/

Maybe I should try again later after several espressos?

Charlotte · « **Reply #257 on:** 15 February, 2013, 07:48:34 am »

Although I'm never one to poopoo the idea of an espresso, just go to the 'share' drop down panel and click 'Grab the HTML/BBCode' and you should be presented with a bunch of text to copy and paste in.

I'd do it for you, but it's only the image owner who is able to do this. Are you logged in?

JohnP · « **Reply #258 on:** 15 February, 2013, 10:33:36 am »

Best of both worlds - an espresso and a solution. Charlotte, you're a gent.

Unexpected fly past, quick grab, heavy crop

Cormorant over Stanborough Lakes 2013-02-14 by John Ponting, on Flickr
Nikon D7000, Nikkor 70-300, 1/3200, ƒ/5.6, ISO 400, 300 mm

clarion · « **Reply #259 on:** 15 February, 2013, 11:00:27 am »

Good grab!

Riggers · « **Reply #260 on:** 15 February, 2013, 01:56:19 pm »

Quote from: David Martin on 11 February, 2013, 01:20:14 pm

And here is the stopped motion video. 5ms between frames. Spot the meercat!

Dear Dr Martin, please could you email me the prescription you're on, so I can take the same because, try as I might, I couldn't see the Meercat!!!

David Martin · « **Reply #261 on:** 15 February, 2013, 01:57:57 pm »

Meercat splash by davidmamartin, on Flickr

That do you?

mike · « **Reply #262 on:** 15 February, 2013, 02:33:31 pm »

that's fantastic!

mike · « **Reply #263 on:** 17 February, 2013, 09:45:41 am »

wedding yesterday. They surprised me with "we're going to release a dove mike, please can you get a pic of it flying away?"

needs tweaking a bit, but:

phew.

clarion · « **Reply #264 on:** 17 February, 2013, 09:51:06 am »

Tricky moment, but it worked out well. Good reactions, Mike. Shame about the hands in front of the faces, but I guess they weren't willing to recapture the dove and do it again

David Martin · « **Reply #265 on:** 17 February, 2013, 10:56:17 pm »

Stayed in, recovering from being unwell. And I found the kids poster paints so decided to see what that would bring to the water drops.

Result!

Untitled by davidmamartin, on Flickr

Untitled by davidmamartin, on Flickr

[

Untitled by davidmamartin, on Flickr

And then adding a different colour..

Untitled by davidmamartin, on Flickr

Once I got the timing dialed in the pics seemed to flow..

Untitled by davidmamartin, on Flickr

Playing with the viscosity is the next step. The Blue was more dilute than the Green.

andyoxon · « **Reply #266 on:** 24 February, 2013, 12:41:40 pm »

Nice work DM.

Had a trip to a cold London yesterday... Science museum, Trafalgar Sq, Nat Gallery (then to Bethnal Green)...

P1160391 by ao, on Flickr

P1160412 by ao, on Flickr

P1160431 by ao, on Flickr

P1160434 by ao, on Flickr

With Icicles...

P1160452 by ao, on Flickr

Jaded · « **Reply #267 on:** 24 February, 2013, 05:13:27 pm »

I like the shadow one.

I've been to a birdy place.

more photos on the Birds photo thread.

including the wonderful attack duck.

andyoxon · « **Reply #268 on:** 24 February, 2013, 05:36:01 pm »

Especially like the first. What kit were you using?

Jaded · « **Reply #269 on:** 24 February, 2013, 07:14:06 pm »

A Sigma 12 0 - 300

It was probably a bit dark for serious stuff, but the photos are for Miss J in her project on animal movement.

clarion · « **Reply #270 on:** 24 February, 2013, 08:21:09 pm »

Miss J is very lucky to have such good materials to work on.

andyoxon · « **Reply #271 on:** 25 February, 2013, 06:05:52 pm »

Quote from: Jaded on 24 February, 2013, 07:14:06 pm

A Sigma 12 0 - 300

It was probably a bit dark for serious stuff, but the photos are for Miss J in her project on animal movement.

whoa... f/2.8 is impressive.

Jaded · « **Reply #272 on:** 25 February, 2013, 07:10:28 pm »

It is stunning. A bit heavy though. Bought for sports, mainly, but rather good for tigers.

David Martin · « **Reply #273 on:** 26 February, 2013, 11:06:20 pm »

On the principle the best camera is the one you have with you - here is my ride home.

frikkin' lasers on the ride home. by davidmamartin, on Flickr

clarion · « **Reply #274 on:** 27 February, 2013, 04:27:07 am »

Splendid. What's the laser cannon?