Battery Replacement for MacbookPro

  A few weeks ago, my laptop battery started failing.  In the past, this is really more of an inconvenience than a problem, I would just go to the local battery store and purchase a new battery and snap it on. Done. The last computer I purchased was a 2.7 GHz Intel Core i7 (mid 2011) MacBook Pro 13 inch. The battery is not user replaceable.  Apple charges $129 to change the battery out in my MBP, that is not too bad, but there is no apple store with-in a 4 hour drive of where I live. I simply cannot be with out a computer for a week or two if I had to send it off…. So, after a little research, I found a battery for $109. If you are brave enough to crack the back panel of your precious MBP, keep reading. The process to change the battery is very simple.   Completely shut down and turn off the computer. Unplug any chargers. Turn the computer over, there are 10 screws that hold the back case on. Use a #0 Phillips screwdriver to remove them. 3 of the screws are a little longer, keep track of where those go. Remove back case The battery is located on the bottom right corner. Located the pin connector, with a small plastic “Spudger” (a spudger is a small plastic pry tool, here are the details: http://en.wikipedia.org/wiki/Spudger) I did not have a “spudger”, so I used a small flat tipped screwdriver, just make sure that you do not bridge the contacts on the battery with a metal screwdriver. That would be...
Fun at f/1.2 on a budget

Fun at f/1.2 on a budget

Seems like everyone wants to shoot images with a very shallow depth of field (Dof). Depth of field is defined as: “In optics, particularly as it relates to film and photography, depth of field (DOF) is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image. Although a lens can precisely focus at only one distance at a time, the decrease in sharpness is gradual on each side of the focused distance, so that within the DOF, the unsharpness is imperceptible under normal viewing conditions. In some cases, it may be desirable to have the entire image sharp, and a large DOF is appropriate. In other cases, a small DOF may be more effective, emphasizing the subject while de-emphasizing the foreground and background. ”  –Wikipedia There are a few ways to get that look. The closer your subject is to the camera, the shallower the depth of field.  You can also achieve a shallow depth of field by changing the aperture. DoF will be less at 1.4 than at 2.8 and so on, and if you combine a very large aperture with a very close subject, you can achieve a very shallow depth of field. Sounds simple, right? There is one catch. Large aperture lenses are expensive. Canon’s 85/1.2 retails for around $2000.00, the 50/1.2 sells for $1300.00. Used copies of these lenses are not much cheaper, either. So, game over, right? Maybe not. If you are a canon user or use a mirror-less camera system there are some very interesting options to get fast glass at an affordable rate. Canon has been making really fast glass for quite some time. There are several 50/1.2 and 85/1.2 lenses for the older FD mount. There...
Lens Calibration

Lens Calibration

Many fo you know that I was having some focus problems from my Canon 7d. Here is an update on what is going on. I sent the camera back to canon for repair, and after 3 days (thanks CPS) the camera came back along with an explanation of the repair. The “focus assembly was adjusted” and a few other minor problems were discovered but were not a contributing factor to the focus problems ( one of the problems was with the compact flash reader causing an occasional err99). I got the camera back, and went out and shot a few images with the 17-35L and looked at the images and they looked pretty good. i was encouraged. then we left for a 3 day family trip to the smoky’s. I spent time shooting the camera, and found that a few of my lens were working great, and a few that were not working great. The 85L was out of focus, but it was focusing very consistently out of focus. I sat down this morning and calibrated all of my lenses. here are the targets after calibration: 85L @1.2: Sigma 50 @1.4: 24L @ 1.4 ( i did have to sharpen this one because the 24L is pretty soft wide open): Canon 17-40 @ 40mm, f4: Camera was tripod mounted, and i shot tethered to my laptop so i could view the images at 1:1 or 1:2 magnification. All images are straight from camera with no edits (except for cropping on the wide angles, so you can’t see my messy kitchen 🙂 and for the 24L which was sharpened in PS). I am hopeful that this will solve the problems. I’ll keep you...

7d Focus Problems

Hello All, I have been having some focus issues with my Canon 7d and I am posting some samples here to share.I believe this to be a problem with the camera, not user error. for this shot i was using a sigma 50/1.4, the auto focus is on, i am selecting a focus point manually (directly over the dogs eye), i have focus priority set in my custom functions. this one is in ai servo and i give enough time to hunt for focus between shots. Handheld. this one is focus. This on is not in focus. no settings have been changed, i have not...