PF Photography Thread

LadyStardust

Thanks. For the first shot, just me holding the camera (no tripod) with an 18-55 lens.

Second pic, Nikkor 50mm f/1.8 lens with a neutral density filter - no tripod.

Third pic, 18-55 lens, pol filter + UV, tripod and colour select setting.

Fourth pic, same as above.

Fifth pic, Nikkor 50mm f/1.8 with pol + UV filters, no tripod.

Sixth pic, 55-200 lens with UV+ND filters + silhouette setting.

Last pic, not quite sure. I think I used a Nikkor 50mm f/1.8 lens there and shot manually.

Andre

Borek, Marzena and other 7D enjoyers.

Check out this present of Canon.

I think I was looking out the most to the 'Maximum Auto ISO setting', to keep some control of the noise level and certainly also the "Improved maximum burst for RAW images (up to 25)" since I have the customized (C2) high burst rate set in JPEG to avoid that problem.

Marzena

Thanks Andre, I have not Canon 7D

Andre

Maybe you borrow it from somebody who does.

http://www.usa.canon.com/cusa/consum...mware_features

Marzena

Yes, from Borek

Borek

Manual setting of an audio level is what I was really missing.

Topher925

I finally was able to escape the lab last night for the first time since April (where we had some great skies that I missed ) and grabbed a few shots of M101. Unfortunately it was hot and muggy so the seeing conditions were terrible, I couldn't even see Megrez.

Anyway, I tried my EQ-1 mount again with my telescope to see how it compares to my 0-GPS1 (I'm selling all my long FL glass). The answer is "not well". I took about 40 frames and in the end could only use 6 of them. So here is 6 minutes of the Pinwheel galaxy.

6x60sec, ST-80 (400mm), ISO 3200/1600


Anyone wanna buy an EQ-1 equatorial mount?

phinds

I was out shooting flowers to try out the color settings on a new camera when I ran across this little (VERY little) fellow sitting on a 2" wide flower (see lower left insert) and thought I'd check out the super-macro capability. It works pretty well. This little guy would easily fit on my one of my fingernails and the image you see here is scaled down from 1/2 the original size (the insert is a separate pic)

Attached Thumbnails

 

Andy Resnick

I worked with a few photos I took last summer, using software to turn my ultrawide into something like what this lens (http://www.the-digital-picture.com/R...ns-Review.aspx) can do:







The image was 'warped' to perform the equivalent to a back tilt/swing on a view camera. In software, I stretched the rectangular image into a trapezoid and then cropped the excess. These images look *terrible* at normal size.

The upper image was a 10 minute exposure, with heavy cloud cover concealing the moonlight- it's amazing the foreground grass stayed completely still during that time and so are sharp, while the ocean is completely blurred out from the motion. The clouds retained a lot of structure, which is also unexpected.

The lower two images are my attempts at copying proper architectural photography. The image warping brought all the lines that lie within the image plane (the horizontal and vertical lines) into right angles, but the depth perspective is highly exaggerated due to the short focal length of the lens- magnification varies with distance much more strongly than 'normal' vision, and so the near-far relationship is exaggerated: the telephone pole shadows converge extra-strongly, for example. In the bottom photo, the receding columns show this effect as well.

The building in the middle photo was torn down this past week- I feel lucky to have gotten this shot. In addition to warping the image, I (tried to) erase the telephone pole on the left.

Triple A

This was taken with a Phase One digital back attached to a 4x5 view camera:



This is composed for 6 sheets of 4x5 film. I scanned the negatives and blended them in photoshop to create a focus stack:

Andy Resnick

Fantastic! jealous = me. What lens(es) did you use?

Triple A

Thank you, Andy. For the top one I used a 135mm lens and a 90mm for the bottom one.

fuzzyfelt

Really nice!

Andy Resnick

Finally got my camera back- a 3 month repair job....

During the summer, we spent some time decapsulating computer chips from dead cell phones and old computers (for fun). Here's a few- the large ones (about 1cm on a side), starting from the lower right, are a 512 Mb DRAM, a Pentium 4, and I don't know what the other ones are. The small ones are chips and diodes, showing the huge differences in sizes. The thicknesses also vary considerably- the Pentium and large rectangular one above it are quite thick, while the DRAM is about as thin as a coverslip.



These two images are close-ups of a diode and the DRAM, using epi-DIC imaging:





This one came from a cell phone and seems to have a lot of ring inductors, possibly as part of resonant circuit(s):



The color in the first and last images are from diffraction, as opposed to DIC.

Andy Resnick

A few more images of chips:









These have all been significantly downsized- the full sized versions of these and some additional images will get posted on our blog shortly.

All the images (except one of the chips in the top photo) were taken with epi-brightfield (tungsten halogen source), using a variety of magnifications- the first image is a collection of FETs (Field Effect Transistors) at 16x or 40x, the second and third images were acquired at 8x, and the last at about 10x.

The colors are most likely due to a combination of thin-film interference and surface plasmon resonance from the various metal layers- off-axis, these chips appear mirrorlike.

lisab

Wow, Andy, those are fantastic! I think some would make beautiful quilt patterns !

Borek

Imagine a hand made knitted fabric following these designs. Geek's paradise!