Showing posts with label dslr camera phone. Show all posts
Showing posts with label dslr camera phone. Show all posts

Sunday, April 20, 2014

What kind of DSLR camera should I get?

Q. taking an intro to photography class and I'm going to need it through out my university years. Don't really know much about cameras but I'm willing to invest a lot and probably will get much better as I will use it a lot.


Answer
You can, of course, ignore the person who suggested a camera phone.

Any of the entry-level DSLRs from Sony, Pentax, Olympus, Canon or Nikon would be suitable for your needs. Visit a real camera shop that carries those brands and choose the one in your price range that offers the most features and benefits for the money and that feels the best in your hands.

If you're seriously "... willing to invest a lot ..." then look at the new Nikon D800 and the new Canon 5D Mark III. Both are full-frame professional grade cameras and might seem like over-kill for a beginner but truth be told you'll have just about the same learning curve with a Nikon D3200 or Canon T4i as you will with either of the full-frame models.

Photography is photography whether you're using a 35mm film camera or an entry-level DSLR or a professional grade DSLR. It all comes down to Light, Exposure, Composition and Depth of Field and those are the elements you'll be learning about in your class.

what is dslr cameras?

Q. What is a dslr camera?
Whats the difference if a camera has dslr or not?


Answer
Hi Judith,

A DSLR or Digital Single Lens Reflex camera is a TYPE of camera, rather than a "feature". It is the modern evolution of the Single Lens Reflex film cameras that were designed to use mechanical construction to allow people to get a very accurate preview of what would be recorded on a photo sensitive material (film). From the 1950's thru the beginning of this century 35mm SLR cameras became the dominant type of camera for advanced photo enthusiasts and many professional photographers. The DSLR continued the existing development path.

Primary reasons for their popularity were -

1] The ability to accurately view an image COMPOSITION almost exactly as it would be recorded on film (because the image appeared on a viewing screen diverted from the optical path of the lens by a system of mirrors plus, in most cases a mirror/prism viewfinder).

2] The ability to acquire interchangeable lenses at relatively modest prices for many special applications such as Macro (High Magnification of nearby objects), Telephoto (the magnification of distant objects), Wide Angle (the ability to record images in views wider angles of view than people normally perceive) and special purposes such as portraits, etc. Most of these with the ability to preview composition in the SLR viewfinder.

3] The ability to adapt the cameras to many specialty applications such photography through Microscopes, Telescopes and specialty optical devices for a variety of medical and other scientific uses.

Digital SLRs use most of the design functions of SLR cameras but substitutes an electronic sensor to record the image instead of film. This takes advantage of the development of electronic recording while preserving much of the technology developed in lenses and other accessories.

However, the handwriting may be on the wall for DSLR cameras, most of which still use the mechanical mirror mechanism and either a pentaprism or pentamirror to give an eye level viewfinder with a properly oriented OPTICAL image. While this is a very good system it requires the inclusion of a mechanically complex vibration inducing mechanism and temporarily interrupts the view of an image while the mirror blocks the light path during exposure (the characteristic "blink" of most SLR/DSLR cameras).

A newer type of camera made possible by digital technology is the Mirrorless Interchangeable Lens Camera (MILC) also referred to as an Electronic View Finder (EVF). These eliminate the need for the complex mirror and heavy prisms and can simplify both camera and lens designs with the benefit of allowing smaller, lighter and more reliable (because of fewer moving/mechanical parts) cameras and lenses. Theoretically this should also mean reduced manufacturing cost/price.

Some disadvantages to MILC are that -

A] They require a power source to operate. Note that ALL digital cameras require a power source in order to record the image but an electronic viewfinder imposes an additional electrical load which shortens operating time/charge.

B] They often rely on display screens (like Smart phones) for composition, which can be VERY hard to see in bright light. Many manufacturers solve this by having eye level viewfinders, either built in or as accessories, to this type of camera. On the other hand this type of viewfinder can make taking pictures in dim light easier because the image brightness can be amplified electronically.

C] Because they provide continuous viewing the actual exposure can be difficult to anticipate. (No blink).

Olympus, Panasonic and Sony were some of the early adopters/pioneers of MILC type technology. Olympus and Panasonic have more or less abandoned the DSLR market in favor of MILC models while Sony continues to offer both DSLR and MILC models (which John has apparently mistaken for some of the SONY DSLR's).

Most of the other major manufacturers of DSLR cameras are beginning to offer MILC models.

Some links to DSLR and MILC cameras.

Four Third & Micro Four Third (Olympus Panasonic

http://en.wikipedia.org/wiki/Four_Thirds_system
http://en.wikipedia.org/wiki/Micro_Four_Thirds_system
http://www.four-thirds.org/en/fourthirds/body.html


Sony, Look at Alpha DSLR & Alpha NEX

http://store.sony.com/digital-cameras/cat-27-catid-Digital-Cameras

In my opinion you can realize most of the advantages of a DSLR with more compact and less costly MILC cameras. If looking for something w/advantages of a DSLR I would add consideration of MILC models such as the Olympus/Panasonic Micro Four Third or Sony NEX models.

I purchased this Olympus model 2~3 months ago, it has basic components of the most expensive models at about h1/2 the price -

http://www.four-thirds.org/en/microft/body.html#i_pen_lite_e-pl5_olympus

Hope that helps, email me (from my Answers profile) if you want more information.




Powered by Yahoo! Answers

Wednesday, August 28, 2013

Mobile Phones and DSLR cameras in winter?

dslr camera phone
 on Nokia 6639 Concept Cameraphone Features Photoshop and... Zippo Lighter ...
dslr camera phone image



Joshua


I come from a tropical country and about to make my very first winter trip to Harbin. I know temperatures in Harbin can drop to -20 Farenheit (-30 Celcius). Is it okay for my phone (Galaxy S3/Blackberry) and Nikon DSLR camera to be exposed to such cold temperatures? Will the cold temperature damage my electronics? I heard from other people that their DSLR camera's battery life is drastically shortened, is this true? What about my phone's battery life?

I will very much appreciate if you guys can give me precautions for electronics in winter, thanks in advance!



Answer
Those of us who shoot winter sports, carry a spare battery in a pocket close to our skin to keep it warm until we need to replace the one in the camera as it gets colder and stops performing. Usually two batteries can do the job using this warming, cooling cycle throughout the day

Of course the sensor on the Nikon dSLR is huge, compared to any cell phone, so the images coming from a dSLR will be superior not mentioning the higher quality lenses and control over the images exposure.

How the sensors compare

http://cameraimagesensor.com/size/#193,30,22,a

Mobile Phones and DSLR cameras in winter?




Joshua


I come from a tropical country and about to make my very first winter trip to Harbin. I know temperatures in Harbin can drop to -20 Farenheit (-30 Celcius). Is it okay for my phone (Galaxy S3/Blackberry) and Nikon DSLR camera to be exposed to such cold temperatures? Will the cold temperature damage my electronics? I heard from other people that their DSLR camera's battery life is drastically shortened, is this true? What about my phone's battery life?

I will very much appreciate if you guys can give me precautions for electronics in winter, thanks in advance!



Answer
I'm not sure about the S3 but as for the DSLR, watch out for condensation. The biggest concern is when returning to heated space after being out in the cold for a time. Condensation will get inside the body or the lens. What you should do is grab a couple desiccant packs and put it in to your camera bag along with your camera and you should be fine. Rice might work too. Don't open the bag the first few hours once you are indoor.
When you look through your view-finder, watch out for where your exhaling goes.Your breath is full of humidity and breathing close up to your camera might introduce instant condensation on cold parts. As for the battery life, you should be fine. Just be sure to get warm or heat packs for your spare batteries. Keeping them close to your chest inside your jacket might work as well.
Shooting with gloves on will make it frustrating to operate the camera so try to select a mode beforehand.

Overall, the cold temperature is not really the problem but getting your camera from cold to heated places is the key point. Once you are open in the cold, let your camera get cold and keep it cold until you are done shooting for the day. Don't worry much and shoot!




Powered by Yahoo! Answers