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Topics - bvukich

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1
Canon General / Handstrap upgraded...
« on: February 20, 2014, 07:19:28 PM »
Handstrap upgraded to "L" spec!

(yes, I'm perfectly aware of how cheesy this is)

4
Lenses / Flat lens offers a perfect image
« on: August 27, 2012, 09:50:41 AM »
https://www.seas.harvard.edu/news-events/press-releases/flat-lens-offers-perfect-image
Quote
The flat lens eliminates optical aberrations such as the “fish-eye” effect that results from conventional wide-angle lenses. Astigmatism and coma aberrations also do not occur with the flat lens, so the resulting image or signal is completely accurate and does not require any complex corrective techniques.


It looks basically like a diffractive optical element taken to it's logical, nanoscale, conclusion.  Very interesting.

Edit...  I should probably note this isn't currently suitable for visible light (THz through near IR), so your 70-200/2.8 pancake will have to wait.

5
EOS Bodies / MOVED: Leica/Canon GLASS
« on: February 20, 2012, 12:22:50 AM »

7
Landscape / Time Lapse
« on: January 14, 2012, 03:06:12 AM »
I periodically make time lapse videos of random dumb things just for fun.  I'm not about to pay for software to do it for me, when there are free ways to do it, which are easy with a little bit of knowledge.  This post will cover just the technical aspect of turning jpegs into video.

There are two key commands (programs) I use, "convert" and "mencoder".

Convert is a command line program used to perform various conversions and transformations on images.  It is part of the ImageMagik suite ( http://www.imagemagick.org/script/index.php ), and should be installed by default or readily available in most linux distros, and OSX.  There are also binaries available for Windows, but my command as given will not work in Windows.

Mencoder is a command line program that transcodes video from one format to another.  It is part of the mplayer project ( http://www.mplayerhq.hu/ ), and is readily available in most linux distros, and OSX.  There are also binaries available for windows, and I think the command will run as given.



The first command, resizes a directory full of jpegs:
Code: [Select]
for FILE in IMG*.JPG ; do convert $FILE -background black -gravity center -extent 5184x2916 -resize 4096x2304 C4$FILE ; done
Explanation, for easier customization:
Quote
for FILE in IMG*.JPG ; do
Returns the name of one file at a time that match "IMG*.JPG" (like IMG_4786.JPG), and feeds it into convert.
Quote
convert $FILE
Convert command, and the variable representing the input file name.
Quote
-background black -gravity center
If the image will be padded, this sets what color the background will be, and how the image will be justified.
Quote
-extent 5184x2916
This will either crop, or pad the image to the correct aspect ratio before it's resized. Think of it as changing the canvas size in Gimp (or Photoshop).  My original image size is 5184x3456, to get that to the desired aspect ratio of 16:9, I can either pad (letterbox) it by setting the extent to 6144x3456.  Or crop it by setting the extent to 5184x2916.
Quote
-resize 4096x2304
Resizes the image to the desired size for the movie.  Since we got the image in 16:9 format with extent, you can pick any 16:9 format.  i.e. 1920x1080 (1080p), or 4096x2304 (4K that Youtube uses).
Quote
C4$FILE
This is the output file name, which I'm taking the variable for the input file name ($FILE), and adding "C4" to the beginning (like C4IMG_4786.JPG).
Quote
; done
Tells it to go back to the beginning of the line, and grab the next file name.



The second command turns a directory full of jpegs into a video.
Code: [Select]
mencoder "mf://C4IMG*.JPG" -mf fps=30000/1001 -o 4Ktest.avi -ovc lavc -lavcopts vcodec=mjpeg
Explanation, for easier customization:
Quote
mencoder "mf://C4IMG*.JPG"
Tells mencoder to use all files that match "C4IMG*.JPG" (like C4IMG_4786.JPG) to create the video.
Quote
-mf fps=30000/1001
Sets the output frames per second.  You can use integer values like 10, 24, 25, 30; or fractions for the exact fps values like 30000/1001 for 29.97fps.
Quote
-o 4Ktest.avi
Set the output filename.
Quote
-ovc lavc -lavcopts vcodec=mjpeg
Set the output video codec to mjpeg.



My (admittedly boring, but luckily short) video created in this manner: http://youtu.be/r2QIMFg2Q4Q . One image every minute for just under six hours.  357 total images.  I used to use a cheap Chinese intervalometer, but now now that it's pretty stable I use the one built into the MagicLantern firmware.

Hopefully this will be of some use to someone.  If not, at least I have it documented for myself now, so I don't have to try and remember every time.

8
Lenses / Cheap UV filters
« on: October 22, 2011, 12:25:03 AM »
So I was playing with a black light, which to be honest, I do more often than a grown man should; and decided to do a little experiment.

Guess which one is a Tiffen UV Protector, and which one is a Hoya PRO1 DMC UV:

9
Canon General / Accent color shots
« on: August 29, 2011, 02:53:48 AM »
When done sparingly, I think B&W with an accent color(s) can look great.  Sometimes it can even make an utterly boring photo in color (like the second shot below), much more interesting.  Here are a couple I've done over the last few years. Please post some of your own.










10
Lighting / Yongnuo YN-565, what's the delay?
« on: July 24, 2011, 12:13:17 PM »
Announced in late march, with availability projected two months out (so late may), this flash still hasn't seen the light of day.

Anyone else as anxious for this flash as I am?

http://speedlights.net/2011/03/08/yongnuo-yn-565-discovered/

11
What's the longest you've ever waited for the perfect photo?

And I don't mean wait in a general sense; I mean actively waiting, checking conditions, for the perfect photo at a particular location?

For me it's three and a half years and counting.  There is a golf course that I drive by twice a day, that has a long perfect tree-lined fairway perpendicular to the road that has been calling to me.  There's about a week window in late fall where the sun is in just the right spot for the picture I see in my mind.  Golden hour, just as the sun is kissing the trees, long shadows. The conditions are never quite right though.  Overcast, raining, snow, all hazards of fall in Wisconsin.  I'll get it though, if it takes me another 20 years.

12
EOS Bodies / Canon T3/1100D Announced
« on: February 07, 2011, 01:20:03 AM »
Canon EOS 1100D/T3 Announced

London, UK, 7th February 2011 – Canon today unveils the new EOS 1100D – the Digital SLR (DSLR) for consumers who want to take the first step on their journey to outstanding still images and HD video. Featuring many technologies developed for more advanced models, and functions which make it even easier to capture fantastic images straight out of the box, the EOS 1100D helps you to have fun with your photography and impress your friends with amazing portraits, landscapes or creative shots.

As your skills develop, the EOS 1100D grows with you. As the gateway to Canon’s world-famous EOS System, the EOS 1100D lets you experiment with more than 60 different lenses and other accessories including Speedlite flashes, to explore the world of photography.

Advanced imaging made easy

Compact and lightweight, the EOS 1100D is a highly versatile DSLR that’s easy to carry with you, allowing you to capture any moment in stunning quality. When a scene lends itself to video as well as stills, 720p HD video capture is easily accessible via the dedicated movie function on the mode dial. Never miss a moment of the action as you frame your image easily and accurately through the newly-designed, bright optical viewfinder, offering 95% coverage of the scene. Alternatively, use Live View to see how different shooting modes will affect the final image on the large rear screen.

You’ll be able to take great images as soon as you start using the EOS 1100D. A Feature Guide in the menu system offers a brief description of each key camera setting and its effect, helping beginners to learn about their camera as they use it.

Basic+ and Creative Auto remove any confusing technical terms, using plain language to describe settings and their effect on the final image. Apply a different ambience to a scene, with Basic+ adjusting exposure, white balance and image processing settings according to easy-to-understand pre-sets based on the creative intent or lighting type. Alternatively, blur the background to create more interesting results with Creative Auto, which takes all the confusion out of achieving the desired effect.

Shoot and share anywhere

The EOS 1100D also makes it easier to shoot and instantly share your images and HD video with friends and family. The large 6.8cm (2.7”) LCD screen features a sharp 230k-dot resolution and wide viewing angle, making it easy to review the day’s shoot immediately. Alternatively, sit back and enjoy the big-screen image playback by connecting the EOS 1100D directly to an HDTV via HDMI, using the TV remote control to scroll through images and enjoy your own high-quality video.

Thanks to support for Eye-Fi Connected Functions*1, EOS 1100D users can wirelessly transfer their images to a home PC or bypass this stage completely and upload images and video direct to an online sharing account like the CANON iMAGE GATEWAY or Flickr – inspiring everyone to share special, fun and creative photography.

From beginners to pros, the EOS system is used the world over

Designed as a user-friendly, powerful, entry-level DSLR, the EOS 1100D features an impressive specification to support the image quality and performance promised by the Canon and EOS brands.

A 12.2 Megapixel APS-C CMOS sensor enables A3 size images to be recorded or cropped for exciting compositions, without compromising on image quality or print size, while DIGIC 4 image processing allows you to freeze the action with high-speed shooting at 3 frames per second*2. Low light subjects can be captured with minimal noise and without resorting to using a flash thanks to a sensitive ISO range of 100 – 6400, and the fast, accurate nine-point autofocus (AF) system ensures the subject is in focus no matter where they may stand in the frame. The EOS 1100D also uses the same iFCL metering system developed for the semi-professional EOS 7D, ensuring all subjects are well-exposed, even in the most challenging lighting conditions.

The EOS 1100D will be available with a new addition to Canon’s range of EF lenses. The EF-S 18-55mm f/3.5-5.6 IS II is a new kit lens that offers EOS 1100D users the flexibility to shoot everything from sweeping landscapes to portraits. A lightweight construction means it’s easy to carry, and Canon’s acclaimed optical Image Stabilization offers a 4-stop advantage to ensure sharp images at maximum zoom and when shooting in low light. The new EF-S 18-55mm f/3.5-5.6 IS II will succeed the EF-S 18-55mm f/3.5-5.6 IS in Canon’s current lens portfolio.

EOS 1100D – key features:

  • Superior 12-megapixel image quality
  • On-screen Feature Guide
  • Creative Auto and Basic+
  • HD video capture
  • ISO 100-6400 sensitivity
  • Wide-area 9-point AF system
  • 63-zone iFCL exposure metering
  • 6.8cm (2.7”), 230,000-dot screen
  • Use with all EF and EF-S lenses


cr

13
Canon EF Zoom Lenses / Canon EF 28-135mm f/3.5-5.6 IS USM
« on: January 18, 2011, 07:38:47 PM »
Canon EF 28-135mm f/3.5-5.6 IS USM

I wouldn't pay full price for one, but I got it for $200.  It was a steal at that price.

14
Sports / Monster Jam 2011
« on: January 18, 2011, 12:17:20 AM »
Went with my kids to Monster Jam for a Cub Scouts outing.  I don't exactly have the gear for sports shooting in a nearly dark stadium, so it was pretty much spray and pray.

XSi 50/1.4 & 430EXII (that nearly melted)

It was dark, smoky, and everything was moving fast.  My poor 430EXII was doing full pops all night long, changed batteries twice, both times they were almost too hot to touch, and the flash was starting to get a funny smell.  At least I didn't let the magic smoke out :)  But even then, the flash was only firing for every 5-6th shot, and out of 1700, only about half were properly exposed.  Of those, my panning was only close enough on about a quarter of them, and out of THOSE only about half were well composed/interesting. (thats about 100 left for those following along with the math)

15
Lenses / Perfect first EF-S "L"
« on: September 27, 2010, 09:13:31 PM »
We have an awesome crop camera in the 7D, is it too much to ask for awesome glass to go with it?  If Canon were to finally come out with an EF-S "L" lens, what do you wish it would be?  Try to make it plausible, and technically possible.  Posting something silly like 4-800mm f/0.95 DO IS USM ABCDEFG is even more useless than any post of this type already inherently is.

The lens that would make me weak in the knees, tingly all over, and trip over my tongue while I run to the store...

EF-S 14-70mm f/2.8L H-IS USM
~$1699 List
~$1399 Street

Slightly more useful focal range than the current 17-55/2.8, 3-4 stop hybrid IS, weather sealing (no more sucking up dust while zooming).  I honestly don't think I'm asking for too much.  Am I?

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