Friday, July 18, 2014

L is for Lens

L is for Lens

A camera lens is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing images checmically or electronically.

Aperture and Focal Length
          Two fundamental parameters of an optical lens are the focal lenght and the maximum aperture. The lens's focal length dtermines the magnification of the image projected onto the image plane, and the aperture is the light intensity of that image.

Focal lengths are usually specified in millimeters, but older lenses might be marked in centimeters or inches. For a give film or sensor size, specified by the length of the diagonal, a lens may be classified as a:

  • Normal Lens: angle of view of the diagonal about 50 degrees and  a focal length aprroximately equal to the image diagonal.
  • Wide-angle Lens: angle of view wider than 60 degrees and focal length shorter than normal.
  • Long-focus Lens: any lens with a focal length longer than the diagonal measure of the film or sensor. Angle of view is narrower. The most common type of long-focus lens is the telephoto lens, a design that uses special optical configurations to make the lens shorter than its focal length.

DID YOU KNOW?: The widest aperture lens in history of photography is believed to be the Carl Zeiss Planar 50mm f/0.7, which was designed and made specifically for the NASA Apillo lunar program to capture the far side of the moon in 1966. 

Types of Lenses

*Wide-Angle* Cannon 28mm f/2.8 IS USM
Wide-ange Lens: focal length range from 21-35mm. With the advent of digital cameras, and the APS-C format, camera manufactures have also started producing specific lenses for this format. Wide-angle lenses crop frame DSLRs range from 10-24mm, with a few going down to super wide 8mm. These lenses are mostly used for photographing landscapes and srchitecture.
*Standard* Nikon 50mm f/1.8G AF-S

Standard Lensfocal length range from35-70mm. The most common standard lens is a fixed 50mm lens. These lenses are mostly use for documentary and street photography.

*Medium Telephoto* Zeiss Planar 85mm f/1.4 ZE
*Telephoto* Mamiya 7 150mm f/4.5
Medium Telephoto: focal length range from 80-135mm. Fixed lenses at these lengths produce ideal framing for head and shoulders shots perfect for portrait photographers.

Telephotofocal length range from 135mm-300mm. Traditionally used for sports and wildlife photography, but there essential function is to bring distant objects closer.

*Specialist* Lensbaby 12mm Fisheye Optic
Specialist Lens: there are a variety but here are the most common...

     - Super Telephoto: a focal length of more than 300mm and are used by dedicated sports and wildlife pjotographers.
     - Marco: able to focus closer to an object ofering 1:1 ratio and are used for still-life photography of small objects.

     - Fisheye: are on the edge of wide-angle lense and give a disorted view of the subject matter. the center of the image is magnified, and objects diminsh in size in all directions around it.

If you have trouble picking out the type of lens that will best capture your photograph just think about what types of pictures you like to take. That will probably narrow down your search.

Wednesday, July 16, 2014

Nikon D810 Debut at Foto Care

Nikon D810 Debut at Foto Care

What A Success! 

          Yesterday Nikon debuted the new D810 at Foto Care. We were the first store in New York to show the camera to the public. That's very exciting for us! At the event everyone learned all of the awesome new things the D810 offers and got to test it out for themselves. Nikon impressed everyone!

Nikon rep. Mike gave a great presentation

Tommy helps Mike set up before we let people take test shots

Everyone loved that they could actually use the new D810
Thank you Nikon for allowing Foto Care to be the first store to debut the D810!

Tuesday, July 15, 2014

K is for Keystoning

K is for Keystoning

Keystoning is a distortion of a projected image when the projector is not directed perpendicular to the screen.

          The keystone effect (or tombstone effect) is caused by attempting to project an images onto a surface at an angle. It is a distortion of the image dimensions making a square look like a trapezoid, the shape of an architecural keystone.

Common Solutions:

  • moving the projector more to the center of the screen
  • tilting the screen in a small angle
  • the use of special software on the projector
  • computer controlling the projector

          Keystone correction is the function that allows multimedia projectors that are not placed perpendicular to the horizontal centerline of the screento skew the output image, thereby making it rectangular. In modern projectors keystone correction technology is performed digitally via internal panels or mirrors of the projector, depending on technology used. 
          When applying keystone correction to an image the number of individual pixels used is reduced lowering the resolution and degrading the quality of the image projected. It is a useful technology in cases where the projector cannot be mounted directly infront of the screen, or on projectors utilizing lens shift technology where the projector must be mounted outside the frame of the screen.

Friday, July 11, 2014

14 Majors Things To Have At Your Photo Shoot

Let's Do A Photo Shoot

14 things you should have...

  • Background paper - lets place the subject somewhere nice and colorful to capture the viewers attention.
  • Background support system - we don't want our set up falling apart. Do we?
  • Tape - tape down cords and wires so no accidents happen on set!
  • Cine foil - for lighting control.
  • Dust off products - keeping equipment dust free.
  • Portable reflectors - to block or reflect light where needed.
  • Sandbags - securing the lights and stands from falling.
  • Apple boxes - to raise/ to sit/ to build set.
  • Gels - can defuse like or add color.
  • Clamps - hold wires and cables in place.
  • Extra tripod quick release plates - just in case you forget.
  • Extra memory cards - you might need it!
  • Back-up batteries and chargers - we don't want our camera's dying!
  • Any cable you may need - power, extension, and charger.
We love our crew so lets bring a fan to keep them cool and music to keep them happy.

Thursday, July 10, 2014

Instagram Vs. Pinterest Vs. Tumblr, How Do They Benefit the Photographer

Instagram + Pinterest + Tumblr = Photographers Best Friend

As a photographer you find any means necessary to get your work out there into the world, but do you know the difference between the various social media platforms? Today the focus is on Instagram, Pinterest, and Tumblr. Which one does what and why should you use them.

Instagram is an online photo-sharing, video-sharing, and social networking service that enables its users to take pictures and videos, apply digital filters to them, and share them on a variety of social networking services, such as Facebook, Twitter, Tumblr, and Flickr. A distinctive feature is that it confines photos to a square shape, similar to Kodack Instamatic and Polaroid images, in contrast to the 4:3 aspect ratio typically used by mobile device cameras. Users are also able to record and share short videos lasting for up to 15 seconds. Launched October 2010.

Pinterest is a visual discovery tool that people use to collect ideas for their different projects and interests. People create and share collections, called "boards", of visual bookmarks, called "Pins", that they use to do things like plan trips, develop projects, organize events, or save articles and recipes. There is also a like feature to save certain pins that may not fit with board. Launched March 2010.

Tumblr is a micro blogging platform and social networking website. The service allows users to post multimedia and other content to a short form blog. Users can follow other users' blogs, as well as make their blogs private. Much of the websites features are accessed from the "dashboard" interface, where the option to post content and posts of followed blogs appear. Launched February 2007.

          If you are a photographer that pays very close attention to detail Instagram wouldn't be the best way to get you work out. The image is way too small to show all of the greatness in your photos. If you are more of a demostrative photographer then Pintrest would be a great place to sell yourself especially if your images can easily be understood and use in daily life. Tumblr is great for any type of photographer. You can not only post the photo but you can add quotes, maybe a video of your photo shoot, add a link to your photography website, and actually chat with people interested in your work. Tumblr might just be one of the best ways to get your work out into the to world because you can share that post on other social media platforms. 

Tuesday, July 8, 2014

J is for JPEG

J is for JPEG

The term "JPEG" is an acronym for the Joint Photographic Experts Group, which is the name of the committee that created the JPEG standard. A JPEG is a commonly used method of lossy compression for digital images like those taken with a digital camera. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality.

Lossy Vs. Lossless

Low Compression | Medium Compression | High Compression

          JPEG's are typically used as a lossy compression method, the class of data encoding methods that uses inexact approximations for representing the content that has been encoded, which somewhat reduces the  image fidelity. A lossy form of compression is used based on the discrete cosine transform. This mathematical operation converts each frame/field of the image source from the spatial domain into the frequency domain.

          JPEG can be used as a lossless compression method, a class of data compression algorithms that allows the original data to be perfectly reconstructed from the compressed data, as well. A number of alterations to a JPEG image can be preformed losslessly as long as the image is a multiple of 1 MCU (Minimum Coded Unit) block. Blocks can be rotated in 90 degree increments, flipped horizontal, vertical, and diagonal axes and moved about in the image.

         There is also an interlaced "Progressive JPEG" format, in which data is compressed in multiple passes of progressively higher detail. This is ideal for large images that will be displayed while downloading over a slow connection, allowing a reasonable preview after receiving only a portion of the data.

JPEG filename extensions

The most common filename extensions for files employing JPEG compression are .jpg and .jpeg, though .jpe, .jfif and .jif are also used. It is also possible for JPEG data to be embedded in other file types - TIFF encoded files often embed a JPEG image as a thumbnail of the main image, and MP3 files can contain a JPEG of cover art in the ID3v2 tag.

Common JPEG markers

Start of Image = SOI
Start of Frame = SOF0 (baseline DCT)
Start of Frame = SOF2 (progressive DCT)
Define Huffman Table(s) = DHT
Define Quantization Table(s) = DQT
Define Restart Interval = DRI
Start of Scan = SOS
Restart = RSTn
Application specific = APPn
Comment = COM
End of Image = EOI

Wednesday, July 2, 2014

The new SONY a7S has arrived!

YAY! The new a7S from SONY has arrived. It's faster, it's smaller and it's incredible for taking pictures in any lighting condition from severe low light to bright sunlight. We love it! Come test it out with us.

Check it out online here.