Apr
02

Yes, there really is a laser in a Laser Printer (Photos)

The actual laser assembly from an Apple LaserWriter 16/600

The actual laser assembly from an Apple LaserWriter 16/600

Ever wonder why the word “laser” is in the term “Laser Printer”? Is it an actual laser, or is this just some gimmick to sell more printers?

To find out, I painstakingly disassembled the guts of a 1990′s era Apple Laserwriter 16/600 printer. My approach: keep removing hunks of metal, motors and plastic until I found the laser. This activity served to kill an otherwise unoccupied afternoon during a break in business school. Click for photos and a detailed breakdown.

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Mar
25

Fast, non-destructive lens and perspective correction? Please?

OK Adobe Lightroom Team, Apple Aperture team, are you listening? I’ve just spent the last 10+ hours doing something manually that belongs in your products (Lightroom & Aperture): Correcting the perspective and lens distortion of photos non-destructively.

blog-post-on-perspective

Before and after, what I want non-destructively

Here’s the problem: I have about 30-40 photos that need to undergo this process:

Please, will someone out there do the following?

  1. Build a perspective correction tool that lets you manually drag across lines that should be either vertical or horizontal, computing the correct rotation, horizontal and vertical correction factors. Check out AutoPano Pro — they seem to have no problem doing this
  2. Buy out Tim Niemann, the PT Lens guy or license his stuff and build the lens distortion correction right into Lightroom. No your clever Lens Correction plugin isn’t enough; distortion varies by focal length for many lens!
  3. Let me apply these three filters right inside of Lightroom and/or Aperture without creating a intermediate PS file
    • Lens correction
    • USM
    • Perspective correction
  4. Provide more fine-grained control over shadow/highlight boosting right inside of Lightroom

Now, I can see the product managers at Adobe grumbling. They are going to say something like “Jeremy, you are trying to do some very sophisticated processing here and not just ‘normal’ image tweaks. You deserve to roundtrip 100 times into Photoshop. Certainly, there is no need to correct lens and distortion just to review and prep images, right?” Wrong!! See, in many cases I’ve taken 4-5 shots of a given scene knowing that I will want to correct it later. I am not sure which source image will do the job best. So its helpful to apply correction to a bunch of images at once to understand which deserves further inspection.

I use Lightroom to help quickly explore the artistic possibilities of the images I’ve taken, to understand and evaluate their ratings. Often, I need to see the image without barrel distortion to see if that image will fulfill my artistic vision. For example, if I am deliberately trying to capture the abstract nature of nested archways, I have to be able to isolate the distracting elements (lines that aren’t straight) to see if the effect I wanted can be coaxed out of the photo.

Here is another argument: There is a whole generation like me coming up in the ranks — I’m just the leading edge. Older school photographers had a different, slower process based around a largely paper and darkroom workflow. My generation is tuned for instant gratification, and they want to take better pictures. When they realize how much better their vacation shots can look without vignetting, or with the buildings looking “straight”, they will want a fast and easy way to do it themselves. Because digital film is cheaper than real film, we are likely to take MORE photos in the hope that one of them will come out right. So you have to help this generation of photographers quickly evaluate and share larger quantities of photos.

Is someone listening?

(For those who can’t read the image, the text is copied below)

Distorted image due to :
* Uneven perspective (lack of tripod)
* Barrel distrotion from 16-35 f/2.8 II lens at 16mm

Corrected image, fully non-destructive, requiring many steps
1) Open photo as smart object from lightroom (wait for this to finish)
2) Apply custom curve to fix shadow ares (Can’t use LR for this
because not enough fine grained control)
3) Run PT lens plugin on smart image to axe barrel distrotion
4) Run lens correct plugin to correct perspective, painstakingly
wiggle all of the settings over and over again to make the
columns and rows line up; PT Lens isn’t great for this
5) Apply USM because sharpening in Lightroom continues to feel
far less intuitive even after a solid year of using it)
6) Save and hope the round trip feature back to LR works and
doesn’t flake out on me

Mar
25

Meatball

I’m taking a break from sorting photos of San Juan to filter down my recent trip to San Francisco. During my trip out there, we were hosted by a bunch of great friends in the Bay Area and SF City itself. It is possible to feel nostalgia for a place you’ve never lived? Clearly we need to visit Cali more often.

Here is Meatball (our group’s mascot), trying to figure out why there is this guy laying on the floor pointing a camera lens.

The full photo set of Meatball has been posted here. More photos coming soon from the trip!

Meatball

Meatball

Mar
23

San Juan, PR: Photo of the Day

Work continues on my photo sorting. Currently I plan a few different collections to share:

  1. A geotagged photo gallery, offering an immersive tour inside the old city of San Juan
  2. A “best of the island” gallery, oriented towards travel
  3. An artistic gallery, slanted to my own perspective on the shapes and colors of Puerto Rico

Here is one photo to share as a teaser:

Cobblestone in Viejo San Juan

Cobblestone in Viejo San Juan

Mar
22

Threat-on-a-Billboard: “If you continue to take my name in vain, I could always extend rush hour traffic.

The literal translation: “If you continue to take my name in vain, I could always extend rush hour traffic.”

Found here, along the coastal road to San Juan.
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Mar
22

Twitter Weekly Updates for 2009-03-22

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Mar
22

San Juan Puerto Rico, Photo of the Day

Now about 80% through my batch of Puerto Rico photos. I’m still hobbling around, but the “splint” is off and the pain is slowly going away. For some ungodly reason, I’m up at 2:00 AM EST. So what better opportunity to share another photo from the trip?

jag-090318-08673_pt

An archway in the El Convento hotel.

Mar
20

Back in Boston, enjoying a balmy 36F on crutches

jag-090319-110486 days and 12,000 photos later, Cynthia and I are back in Boston, where it is freezing as usual.

I’m about 1/3 of the way through sorting my photos, and taking stock it does seem like I met my goals of

<continued> Read the rest of this entry »

Mar
19

Geotagging San Juan, Part 1

On my trip to San Juan Puerto Rico, I decided to make my first formal foray into the world of geotagging. On advice of my friend Saadiq, I brought along a GiSTEQ PhotoTrackr, a small USB device that records your location and time. So far, I’ve managed to geotag nearly all of the photos on my trip automatically using this tiny but somewhat unintuitive box.

Check out the breadcrumb trails of my frequent walks in Viejo San Juan; you can see I’ve left few stones unturned over the course of five days.

picture-4

The big blue blur to the southeast of the orange map pin is the Hotel El Convento, where we are staying. This hotel was built into a hurricane-proof convent constructed in the 1700s, and so the GPS signal is very weak, resulting in a spastic pattern of recorded movement when we are in the hotel room.

Next step: Figure out how to display my pictures next to a map.

Mar
16

Back in old San Juan, PR

jag-090314-00692

Cynthia and I are back in Puerto Rico, this time staying at El Convento in the heart of oldtown. We’ve been wanting to come here for a while, pretty much since we first walked by the hotel in 2004.

I’m not sure exactly what appeals to me so much about this archway in the El Morro Fort, in old San Juan. But I like it so much that I went back there yesterday and grabbed a series of photos.

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