Feb 20 2018

Color Monitor Calibration Software

Download software and start to use the tool to calibrate the colors on the monitor.

Color monitor calibration Colormunki

November  6 2014:

Photography Assignment from National Geographic : Due Nov 17


July 12 2014

Canon 7D Review:
How to control Depth Of Field:
1. Smaller the Aperture size = Higher the Depth Of Field. Example: (AV= f/22 > higher the Depth Of Field while AV= f/2.8 < Depth Of Field
2. Distance is farther = Increase The Depth Of Field. Example: A shorter focal length lens (say 27mm) focused at 5 meters, set at f/4 has a deeper DOF (perhaps from 3 meters in front and 20 meters behind) than a longer focal length (say 300mm),
3. Wide Lens is wider = Increase The Depth Of Field

Canon EF 28-135mm f/3.5-5.6 IS USM Standard Zoom Lens for Canon SLR
1. 28-135mm standard zoom lens with f/3.5-5.6 maximum aperture
2. Close focusing distance of 20 inches; 75- to 18-degree diagonal angle of view
Great for outdoor shoots.
Great Review

Canon EF 50mm f/1.4 USM Standard & Medium Telephoto Lens
50mm standard lens with f/1.4 maximum aperture

Sekonic L308DC Review:
Three custom settings adjust meter operations and displays to fit camera and metering requirements.
Exposure can be displayed in full, 1/2 and 1/3 steps. One-tenth step calibration enables tuning the meter to match the camera or other meters.

Flash 580EXII

Dec 14 2013

photo by Thuy Le studio

Time: 1Pm USA/ California
Day: Thursday, Dec 19 2013
Hosted: Joe Brady

June 19 2012
Choosing a Focus mode:

    • TV (shutter speed)

1. Action, sport, racing, running water: TV (shutter speed)
– Live view LCD
– continue shooting mode (AF. Drive button on the top of the camemr, orate the quick control dial, look for the high speed continuous mode (B)
– wide angle lens: large depth of field
-f stop: small AV (apature) :sharpness the closed subject to the farthest object (high depth of field)
– iso: small 100 ( free of digital noise)
– TV: shutter speed: fast moving subject to froze the moment (1.3 sec), slow to create the motion (1/1000 >, 8 sec), running speed (1/15 sec)

Low Light situations: fast moving subject will blur with shutter speed slower than 1/125.

4. P program mode
Casual Environment:

June 18 2012

canon macro lens
CANON EF 100mm f/2.8 Macro USM
    • The 180mm Lens is ideal for shooting tiny subjects without disturbing them; the 50mm is a better choice for copying flat documents.

EF 100mm f/2.8L Macro IS USM
Autofocus lens for macro photography up to life-size (1x) magnification. Inner focusing affords a long working distance of 5.9in. (149mm) at 1x. A 3-group floating system results in excellent delineation at all focusing distances. Ring USM for silent and high-speed AF, and full-time manual focusing also provided. The optional Tripod Mount Ring (B) B (with adapter) enables the lens to be rotated for vertical or horizontal framing.
the Canon 100 Macro internally focuses very fast, quietly and very accurately. Middle-of-the-road working distance. When focusing at 1x subject distances, it is very nice to have a lens that does not extend. FTM (Full Time Manual) focusing is enabled and the front element does not rotate. A focus limiter switch enables full or restricted focus distances. The MF ring is nicely sized, well-damped and smooth.
This lens is sharp wide open and even sharper stopped down slightly with corners showing the most improvement. The tiniest details in your tiniest subjects will come to life with this lens.
Vignetting is apparent at f/2.8, but rapidly disappears when stopped down. Flare is very well controlled. Color and contrast are excellent. Distortion is negligible. Eight aperture blades help to create an excellent quality background blur.
As it is a true 1:1 macro lens, the Canon EF 100mm f/2.8 USM Macro Lens will deliver a subject to your sensor at the same size it is in real life. 1x magnification is achieved at the MFD (Minimum Focus Distance) of 1′ (.3m). It doesn’t take a very big subject to completely fill the frame at this 1x magnification. The Canon 100mm macro allows a reasonable minimum working distance (MWD) of 6″ (150mm) from the end of the lens (without the hood in place). Going further, extension tubes can take the magnification to 1.19x and 1.39x for 12mm and 25mm tubes respectively – at the expense of lost infinity focus. The Canon EF 100mm f/2.8 USM Macro Lens allows about 6″ (15cm).
The focal length also affects other macro photography aspects. Longer focal lengths require more distance to acquire the same subject framing. The result is a change of perspective – the telephotos compress/flatten the subject features more than short focal lengths. The wider angle of view of the short focal length macro lenses mean that more of the background will be in the picture – and that the background will be less-diffusely blurred.It offers excellent optical performance and middle of the road focal length, working distance and size/weight.The 100mm focal length along with great bokeh (foreground/background blur quality) makes this a great portrait lens as well.


– Perfect closed up lens
– Fast Focusing: Utilizing the USM (Ultrasonic Motor), the Canon 100mm internally focuses very fast, quiet
– Non-Extending or Rotating: When focusing at 1x subject distances, the lens does not extend, and the front element does not rotate.
– Great to use for underwater macro images.
– Very good image quality, L rated.
– Nice build quality.
– A joy to use the very large focusing ring.
– Pretty good for portrait (close-up headshots).
– Excellent Optical Performance: Flare is very well controlled. Color and contrast are excellent and distortion is negligible. Although vignetting is apparent at f/2.8, this rapidly disappears when the lens is stopped down.
– Optimum Minimum Working Distance (MWD): The EF 100mm f/2.8 USM Macro Lens, on the other hand, has a MWD of 150mm, which is ideal for butterfly, portrait, flowers and insect photography.


– fixed 100mm. The fact that it doesnt zoom should not be counted against it. You have to work with your feet. Be creative. Can’t easily shoot indoors on a 1.6 body. Also, 2.8 is a PLUS, not a minus. If this was f2, well.. they make an f2, so buy that one if you want, but 2.8 is perfect on this lens. Lastly, primes are better, get used to it.

– Medium Build quality – this USM Macro lens has a reasonable build quality although it’s not quite as solid as the L-Series lenses.
– No Image Stabilization – this lens does not feature the image stabilization present with the significantly more expensive Canon EF 100mm f/2.8 L IS USM Macro Lens.

Extra equipments:
A tripod in combination with the Canon MR-14EX Macro Ringlite flash.

Extra info from experience:
– Don’t think about doing macro photography without flash! we are using a 580EX II + pocketwizard.
– Prefer close-up lens (like the Canon 250D) than extension tubes, because they are much more easier to use (no need to get the lens out of the body) and you don’t loose any light.



Reference sources:


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