Aperture

The maximum aperture of the lens you choose can have a significant impact on the types of photos you can take with your digital SLR camera.

There is a standard scale for aperture numbers

1.4 / 2.0 / 2.8 / 4.0 / 5.6 / 8.0 / 11 / 16 / 22 / 32  let’s see picture below.

Form www.elizabethannedesigns.com

Smaller Aperture Number (1.4) = Wider Aperture = More Light

Larger Aperture Number (16) = Narrower Aperture = Less Light

Maximum Aperture

The limit to how wide a lens can be opened is called the maximum aperture.

All lens apertures can be narrowed as much as you want. For example, every lens on the market today – regardless of manufacturer – can be set to f/16.

But every lens on the market cannot be opened up to f/1.4

Lens A might have a maximum aperture of f/2.8 while lens B will have a maximum aperture of f/4. While both lenses can be set to an aperture of f/8 (narrower than the maximum setting) the f/4 lens cannot be opened up to f/2.8.

The benefits of lenses with wide maximum apertures is

Natural Light Photos

A digital SLR camera sensor needs light to create an image.

There are two ways that it can get the light that it needs: it can keep the shutter open for a long period of time or open the aperture as wide as possible.

If you had a lens with more a maximum aperture Then you can use more a shutter speed which means that you can get clear photos without the flash.

Fast Shutter Speeds

Example: You set the aperture on your lens as wide as it can go (let’s say f/5.6), and check the shutter speed. The camera tells you that you can use a shutter speed of 1/125 of a second

If you had a lens with a wider maximum aperture you could get the shot. With a wider aperture (say f/2.8) your shutter speed could be 1/500 of a second.

Since the wide aperture lets in so much light, the shutter doesn’t have to stay open as long.

Reduced Depth of Field

Lenses with wide maximum apertures have shallow depth of field.

If you have a lens with a maximum aperture of f/5.6, you can’t reduce the depth of field as much as you can with a wider aperture.

Nature and portrait photographers use Wider Aperture all the time to reduce the impact of a busy background.

..Continue next time.
More info http://rebeldigitalslr.com Canon and Nikon DSLR review.

Popularity: 3% [?]

Today a new model of DSLR come with more and more Megapixel 12,16,21 etc. and one thing we know about that is

the more megapixels , the more it costs. right? but Is More Better?

Photo that contains 10 million pixels is physically larger file than one with only 8 million then the first photo with should look better.

Almost right but not at all. When you viewed or printed at small sizes they are hard to tell which one is better.
you will see a difference in quality when printed it at large size.Let’s see this.

Megapixels          Print Size (max.Inches)
2.0                             4 x 6 [standard]
3.0                             5 x 7
4.0                             8 x 10
5.0                            8 x 12
6.0                            9 x 12
8.0                            11 x 14
10.0                         12 x 16
12.0                         16 x 20
14.0                         18 x 24

If you take a photo with 8.0 Megapixels you can print you photo in high quality at 11 x 14 or smaller. If you want bigger size you want more Megapixels if you don’t want to print in big size it’s not necessary to get more Megapixels.

Tips:
Buy a high megapixel DSLR camera if you:

* Want to print very large of your photo.
* Want to crop out large portions of your photos and still make large prints

Not necessary to buy lots of megapixels camera if:

* You don’t make prints larger than size with megapixel that tell you above.
* You want to upload images to an online gallery or website or sharing photos with friends via e-mail only.

Hope this can help you if you want more info of Canon and Nikon DSLR visit http://rebeldigitalslr.com for full review.

Popularity: 16% [?]

Nikon D90 Digital SLR Camera with 18-105mm AF-S DX VR Nikkor Lens [Outfit] + Nikon 70-300mm Lens + 8GB Cameta Bonus Accessory Kit

Sunday, September 6th, 2009 at 5:21 pm   Edit

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Nikon D90 Digital SLR Camera with 18-105mm AF-S DX VR Nikkor Lens [Outfit] + Nikon 70-300mm Lens + 8GB Cameta Bonus Accessory Kit
	Manufacturer: Nikon Customer Rating: List Price: Varies based on product options Sale Price: $1,419.95 Availibility: Usually ships in 1-2 business days
Product Description
Kit Includes: ♦ 1) Nikon D90 Digital SLR Camera Body ♦ 2) Nikon 18-105mm Lens [Outfit] ♦ 3) Nikon 70-300mm Zoom Lens ♦ 4) Transcend 16GB HC SecureDigital Class 6 (SDHC) Card With Reader ♦ 5) Nikon EN-EL3e Li-Ion Battery Pack ♦ 6) Nikon SLR System Case ♦ 7) Image Recall Digital Image Recovery Software ♦ 8.) Precision Design Memory Card Storage Wallet ♦ 9) Precision Design Deluxe 6-Piece Lens & Digital SLR Camera Cleaning Kit The Nikon D90 SLR Digital Camera, features a 12.3-megapixel DX-format CCD, 3″ High resolution LCD display, Scene Recognition System, Picture Control, Active D-Lighting, and one-button Live View. Nikon’s EXPEED image processing engine delivers outstanding images. The D-Movie mode records 720p HD movie clips. Nikon’s Scene Recognition System advances precision in auto focus, auto exposure, and auto white balance in diverse shooting situations. The Live View mode allows for users to frame their images on the large 3″ high resolution color LCD – providing for easy image framing, even when shooting at odd angles. The Nikon AF-S DX Nikkor 18-105mm VR lens features built-in Vibration Reduction II system providing equivalent shutter speeds 3 steps faster than standard lenses. It also has one ED glass element and one aspherical lens element, optimized for use with DX-format SLRs. The VR system & ED glass allow you to make highly-resolved, crisp images with minimal chromatic aberration. Lastly, the lens’ ultra-compact Silent Wave Motor allows for blazingly quick, silent autofocus. The Nikon 70-300mm f/4-5.6G offers high power telephoto capability, ideal for a variety of applications including sports, wildlife and candid photography. The built-in macro capability provides a maximum reproduction ratio of 1:4.
Product Details
KIT INCLUDES 9 PRODUCTS — All Brand New Items with all Manufacturer-supplied Accessories + Full USA Warranties: <#1> Nikon D90 Digital SLR Camera Body PLUS + <#2> Nikon 18-105mm AF-S DX f/3.5-5.6G ED VR Nikkor Lens [Outfit] + <#3> Nikon AF 70-300mm f/4-5.6 G Zoom Lens + <#4> Transcend 16GB HC SecureDigital Class 6 (SDHC) Card With Reader + <#5> Nikon EN-EL3e Li-Ion Battery Pack + <#6> Nikon SLR System Case + <#7> Image Recall Digital Image Recovery Software + <#8> Memory Card Storage Wallet + <#9> Precision Design Deluxe 6-Piece Lens & Digital SLR Camera Cleaning Kit
Video Reviews
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Customer Reviews
You can tell the D90 was designed by photographers and not just engineers! Wonderful user interface and image quality! Review Date: September 30, 2008 Reviewer: E. Kim, I am far from a professional photographer, but I take it as seriously as possible while still referring to it as a hobby. I take mostly pictures of people at events and many of my baby son without flash in low light situations. I had been using a Nikon D40x for 1 year and very early reached my limitation with that camera. The Nikon D40x has very nice image quality, but the camera’s interface is not suited for a more serious shooter who wants quick single button or dial access to such shooting parameters such as white balance, shooting mode, metering mode, etc. I also felt very limited by the D40x not having an in-body focus motor that would allow me to use non AF-I/AF-S lenses (which are lenses without the focus motor built-in). The Nikon D40x limitations were severe enough that I was about to consider purchasing a Canon 40D until the Nikon D90 appeared just in time. PROS: 1. Fantastic set of separate buttons on the camera to control parameters like ISO, white balance, metering, autofocus, image quality, shooting mode, etc. 2. Two command dials 3. High resolution 920K pixel LCD screen (like the one on the Nikon D300) 4. 12.3 megapixel CMOS sensor 5. Low noise high ISO capability (for low light shooting) I can shoot ISO 1600 with good image quality with this camera, while on my D40x I could only shoot with ISO 400 and obtain acceptable IQ. I will even use ISO 3200 frequently with very usable results! 6. Separate top-viewing LCD screen in addition to the rear high res screen, to show shooting parameters constantly 7. In-body focus motor which allows the use of Nikon’s non AF-I/S lenses, including wonderful and CHEAP prime lenses such as the Nikkor 50mm 1.8 (~$100 lens!) 8. Continuous shooting of 4.5 frames per second 9. Small size, although larger than the D40/D40x/D60, it is still substantially smaller in the hand than the D300/D3 10. 720p 24fps MPEG video shooting capability with incredible ability to use depth of field that I cannot achieve with my Sony High-Def camcorder. 11. Eleven auto-focus points (not as nice as the 51 points on the D300, but substantially better than my D40x with its 3 points) 12. GPS option 13. HDMI output 14. Enormous number of options to customize camera and shooting settings to fit your style of shooting 15. Fantastic image quality right out-of-box if you don’t want to do any post processing 16. Terrific build quality 17. Top notch camera ergonomics (but this will be a very personal opinion that differs for each shooter) CONS: 1. “Rolling shutter” phenomenon while recording video: The D90 CMOS sensor has the same problem that other CMOS video recorders have when recording video. If you move the camera, especially horizontally, you get a “jelly” or “rubberbanding” effect where the image wobbles significantly. It is nice to have the video features, which looks very sharp at 720p, but it is NOT a substitute for a video camera. If you use a tripod, and do not do quick zooms/pans, the video quality is excellent. Without a tripod, however, you may get nauseas watching a wobbly video. The sound is also in monoaural. 2. 1/200 flash synch: Not a problem for me, but it might be for you. 3. No weather sealing: This is found on the Nikon D300/D3 and even on similarly priced models from other camera companies 4. The buffer will fill up after about 8 continuous RAW + JPG (FINE) shots. This number differs depending on the shooting parameters that you will choose. If you shoot primarily JPG, the buffer seems to allow a very large number of continuous shots, but I have not quantified this for JPG only. TIPS: 1. Get the FREE Nikon ViewNX software from Nikon’s site as your 1st step in your workflow. This will let you examine your RAW images that you can process for either Nikon CaptureNX2 to do further RAW processing or just export to JPG for a JPG editor such as PhotoShop. 2. Recommend buying the Nikon CaptureNX2. It is a RAW converter (if you shoot in RAW) that will read the camera settings properly for export to JPG. Capture NX2, however, is not as slick as the Adobe products and Capture NX2 requires a fairly powerful computer, otherwise it can run pretty slowly on a PC > 3 years old. 3. If you use JPEGs out-of-camera, consider increasing the sharpness above the default 3 or 4. Nikon uses a very conservative sharpening default setting. Nikon has decided to change the default JPEG images to match the higher end D3/D700/D300 cameras which produce more neutral images. Consequently, the D90 images that are less punchy than the D40/D40x/D60/D80, so you may also want to turn up the in-camera saturation and contrast. The Nikon D90 has all of the interface features that serious and even professional photographers need with wonderful image quality. Finest camera I have ever owned. Review Date: December 3, 2008 Reviewer: James R. Lowell, Gilford, NH USA So far this camera has outstripped my talents, however I am learning more each day I use it. This camera has many capabilities I have yet to experiment with, however it is also relatively easy to use for general picture taking for an the inexperienced. What I am saying is if you are new but serious about learning SLR photography this camera is for you. It will take you from the simpilist full auto point and shoot to features only a pro would use. Bravo Nikon!! Nikon D90 bundle Review Date: December 16, 2008 Reviewer: desull, While researching the Nikon D80 and D90 there were slight differences which I thought were worth the extra money since the D80 price was so drastically reduced. The D90 has a better sensor, it has an auto cleaner, video capability (I have a brand new grandbaby on the way and know I will use this feature quite often). The “Bundled” kit came with everything I needed with out buying and extras (I already own a tripod) The choice of lenses, 18 – 105 and 70 – 300 pretty much covers any focal length I would need. Highly recommended. D90 Nikon Review Review Date: December 22, 2008 Reviewer: Frank A. Conner, Irvine, CA United States After getting away from shooting pictures with an SLR for a few years, succumbing to the ease and quality of digital point and shoot cameras, I took the plunge and decided to buy a digital SLR. I have been a Canon owner for a lot of years, but the D90’s video capability sold me on it. There are a few things that video just does a better job with than still shots. What has really impressed me with the D90 however, is the ease of changing the most used creative settings with the push of a button or quick twist of a dial. Shooting available light in low light situations (one of my favorite things) is just a one click turn of the thumb wheel. Moving the shutter to multiple setting is just a button push and the turn of a wheel. Moving to shutter priority or aperture priority is likewise quick and easy. None of these things require going into lengthy menus (which there are many if you really want to take control) and make casual photography in a creative way fun and EASY. I really like this camera. Easy yet professional Review Date: January 12, 2009 Reviewer: Kimberly Culp, Was a little worried it would be too advanced for me to work, but was able to use it right out of the box! My girlfriend came over and picked it up and started taking great pics. Easy to operate, yet professional quality!

Popularity: 5% [?]

I recently ditched my 30D for the 50D. Among the principal reasons I decided to get the 50D instead of waiting for the 5D MkII model to come out was that I was able to utilize everything I already had for my 30D since they are compatible. This is a great feature because I can continue to use my batteries, grip and remote without a problem. What caught my attetion is the new screen, it is perhaps the most perceptible upgrade to anyone who has used a 30 or 20D, the screen is really clear and the better resolution is visible from the instant you turn it on. The Digic 4 system is a far easier sustem to get along with when you compare it with previous models, not to mention the user custom menu which permits you to configure your preferred settings all in one place.

If I have to be honest though, the 15 megapixel sensor is overkill in my opinion. Anoter thing is that there’s a tad much attention driven to the ‘make it higher everytime’ aspect of these gadgets given by the camera companies. I would consider 8 megapixels to be more than enough for the average person and it’s big enough for most regular size prints, I have printed almost 13 inches without a problem. The one advantage the extra mega pixels will give you is the ability to crop closer in post processing. The Live view feature is nice, but I probably won’t use it. Among the causes I prefer the DSLR over the point and shoot is the way the view finder allows me to see the shot and frame exactly the way I want with no distractions. I personally think that Live view is a curious feature to store in a mid to high range DSLR, but I’m able to see where the company would like to aim for those folks accustomed to point and shoot cameras.
Continue.part2….

Now EOS50d come with standard zoom lens in special price here or visit http://rebeldigitalslr.com for more customer review.

Popularity: 2% [?]

What is the first brand that comes on your mind when thinking of “advanced amateur photography”? Let me guess! It’s Canon. Indeed, we all tend to include this brand on our criteria list when searching for a good high-end digital camera, especially because it is among top rated on customer reviews websites. To keep you up to date with the latest Canon camera releases, I’ll tell you about the new Canon EOS 50D, comparing it with the previous model, Canon EOS 40D, which many of your friends probably already use and told you how superb pictures it produces whenever they have some impressive landscape to shoot. Both camera models are digital single-lens reflex models displaying on the LCD screen the exact image that will be captured after releasing the shutter button. Canon EOS 40D was announced last year in August, when we found out about a new model featuring 10. 1MP CMOS APS-C size sensor, high-speed shooting capability and several smart features.

It uses the DIGIC III image processor that enables 6. 5 frames per second of continuous shooting, for 75 JPEG pictures or 17 RAW photos, in natural colors and sharp details, thanks to the fast signal processing.

The LCD display measures 3 inches in diagonal and supports 230K colors with 140-degree viewing angle on horizontal and vertical. Other camera characteristics include 0. 15-second start-up, 100,000 cycles shutter, 1/8000 sec shutter speed and 1/250 maximum X-synch flash shutter speed, 3200 maximum ISO sensitivity, 14-bit Analog-to-Digital conversion, sRAW image capture, f/5. 6 maximum aperture, f/2. 8 for EF or EF-S lenses, the EOS Integrated Cleaning System with ultrasonic vibrations for shacking dust off of the low-pass filter in front of the sensor, the Dust Delete Data file that maps spots on the image to be removed automatically at a later time using the special software, and the 35-zone metering sensor for measuring ambient light. This camera has a retail price of $1,299. At $1,399, you have now the chance to get the brand new 15. 1MP Canon EOS 50D model, released exactly one year after the 40D. Canon EOS 50D is already a highly wanted model dedicated to the same consumer sector as the previous model, and comes with few new enhancements, starting with the image processor which now is a DIGIC 4. Besides superior color reproduction and sharp details, it enables continuous 6. 3 frames per second shooting for 90 JPEG pictures on Ultra Direct Memory Access Compact Flash cards and 60 JPEG or 16 RAW images on Compact Flash cards. The Face Detection Live Mode allows you to capture 35 faces and never miss that perfect position which is very hard to capture without the continuous shooting feature. Canon EOS 50D provides 15. 1 effective megapixels for 4752 x 3168 pictures, with a CMOS APS-C size sensor improved to reach 12,800 sensitivity with no noise.

There are 4 levels of ISO with Standard, Weak, Strong and None noise reduction settings. Also, the LCD screen was improved to display the images in 920K colors at 160 degrees, both horizontally and vertically, and what you see is what you get later on your HDTV, via the HDMI connectivity. The camera has 0. 95x viewfinder magnification, f/5. 6 aperture, AF Microadjustment, Creative Full Auto setting allowing you to adjust images during continuous shootings, and support for 7. 1MP sRAW1 and 3. 8MP sRAW2 recording formats. Self-Cleaning Sensor Unit is not missing either, as well as the Dust Delete Data software part and the E-TTL II flash metering system. So many design enhancements for such a small price difference!

For more user review HERE or visit http://rebeldigitalslr.com to read another model reviews.

Popularity: 1% [?]

Also, the flash exposure control Jury still a tendency to jump only people in close contact with the skin a considerable amount of chromatic aberration. But with a little ‘manual flash exposure, you can get the hang of doing a good exposure and color images flash balanced. Furthermore, the camera takes pictures in uncompressed RAW format, which allows you to capture high-resolution images that can be optimized in Photoshop CS2 and CS3.
The most notable change on the Rebel XTi is the new 2. 5-inch LCD screen. If you remember, is the original Digital Rebel and Rebel XT had 1 8. inch screen, which seems awfully small these days. “LCD screen has 230,000 pixels, which competes with other entry-level D-SLR out there. As is the case with most digital SLRs, the LCD is only used for displaying photos and navigation – not to compose pictures.

As is the case with all digital SLRs, Canon does not include the memory card with the Rebel XTi, so you have to factor in the total purchase price. Fortunately, CompactFlash cards are cheap nowadays and I would recommend a 1GB card, like a good starter size. The Rebel XTi, supports Type I and Type II cards, including Microdrives. The purchase of a CF card at high speed (50x or above) is a clever idea.

Overall, the Canon EOS Rebel XTi is good, solid images in a variety of decent conditions, particularly high to moderate levels of brightness. This is a perfect camera for amateur photographers interested in using a camera with professional features at affordable prices to improve their skills, taking good photos, and leave you just a little ‘hungry for more.

For more info of Rebel XTi click here or visit http://rebeldigitalslr.com for full review of DSLR best seller model

Popularity: 1% [?]

Canon EOS Rebel series could be the most popular series SLR camera last ten years. The Digital Rebel XTi is the updated version of the Digital Rebel XT. Priced at $ 899 kit with the objective, this model is Canon EOS tradition of offering excellent Camera Pro to a entry-level price.

Although the CMOS chip used by the XTi is the same physical size as the version of the XT, Canon crammed more pixels into space to increase the resolution and improve the design of micro-lenses, the eyes “of the CCD. The microlenses gather indirect light and focus again on the sensor. XTi also offers increased size of the photosites themselves. (The electric diodes are tiny photosites that convert light into electric charges.) The result of this technology has improved economically and has a device sensitive enough to render adequately the rich blacks of color and low light. However, “adequate” is a subjective term. It is worth mentioning that the noise measured XTi and visible image is worse than the CCD-based Nikon D80 for a given ISO speed.
The CMOS chip in the XTi is now self-cleaning. Similarly to many other digital SLRs, the low-pass filter layer vibrates when the power device on or off to shake dust from the sensor, more, there is a static coating on the filter that repels dust.

Unfortunately, as the Rebel XT XTi lacks a meter on the spot, it only provides Center-weighted average, partial-center and center-weighted metering. This amounts to appropriate controls. As spots are essential in many situations in which a subject is backlit. I had to pass close to an object that was before a light background, to obtain a general counter, reading his face, and then step back and compose the image. Even then, there was some trial and error involved. The lack of spot metering can be one of the most critical shortcomings of this camera.

The shutter is fast, though a little ’slow compared to the Nikon D80 and Canon D30 upper end. The 18-55mm Lens Kit supplied with the unit is lightweight and balances well in the case, but is quite slow, allowing only an F / 3. 5 mesh opening at the most. This limits the pictures in low light and superficial as you can make the depth of field. There’s something even more insidious than the depth of field / low light performance, pictures, even targeted tend to be somewhat ’soft when shooting at maximum aperture. But keep in mind that you have a plethora of options compatible with Canon EF and EF-S lenses that Canon offers first. They give you a significant increase in light sensitivity and depth of the manipulation on the ground. Remember that, because of the physics of the CCD camera, the “real” focal length will be increased by 1. 6X what is indicated on the lens. For example, a 50 mm former have the vision field of a lens 80 mm.

Continue part 2  For more info of  Rebel XTi click here or visit http://rebeldigitalslr.com for full review of best seller DSLR

Popularity: 1% [?]