Monocular Compact Telescope Zoom Optic Lens 7-21×25
Monday, November 23rd, 2009 at
10:27 pm
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Monocular Compact Telescope Zoom Optic Lens 7-21x25
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US $44.75 End Date: Tuesday Nov-24-2009 2:23:57 PST Buy It Now for only: US $44.75 Buy it now | Add to watch list |
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OK first of all saying a camera has 20 X or 10 X is really more a marketing thing than telling you any data about what the lens does, A 10mm-50mm a 20mm to 100 mm and a 100mm to 500 mm are all 5X lenses though they are nothing alike. Point and shoot cameras can more easily give you a larger zoom range because they have to only focus the image on a small sensor. Also they are not worried as much about things like chromatic abberation or lens distortion ( e.g. Barrel Distortion ). They do not have to be particularly fast lenses ( dSLR lenses can have much larger aperatures to let in more light, large aperature lenses are called fast lenses) In short they are not held to the same standard that optics on a dSLR are. And will never have the ability to deliver the same quality images.
In addition dSLR will have a bigger sensor. A larger sensor will give you more light to each pixel which gives better dynamic range, better color saturation, better geometric accuracy and lower noise, A dSLR has interchangable lenses so you can change the perfromace of the camera dramatically by changing the lens. An example of this is thats its almost imposible to get good bokeh whith a point and shoot but with a dSLR you can put a 50 mm 1.4 lens on it and get great bokeh. If you need a faster zoom you cannot add it to your point and shoot. If you want a wider angle than your point and shoot goes to again you are out of luck.
A dSLR has a better image processor. A dSLR will have faster write times to a card and a larger buffer so the ability to take more shots per minute, In a dSLR what you see in the veiwfinder will be what you get in your photo as far as composition. A dSLR will give you more control over your settings and therefore over your photos. A dSLR will have a quick phase-change autofocus system that aquires the image much much faster than the , contrast based autofocus on a point and shoot. Doing away with that lag that occurs when you push the shutter release on the point and shoot. A dSLR will have a more accurate metering with more metering options a dslr can use multiple flashes and some will control several flashes that are off camera to be used in the same way studio lights are
In short a point and shoot gives you light wieght and OK photos over a large range at a cost of image quality and image control. The dSLR gives you more control, the ability to make better images, more versatility at the expense of having to put in the time and effort to learn how to use it.
Yes it does.
hahah good comment
If you are set on only one lens, you could do lots worse than the Tamron 18-270. It has a huge range and also image stabilization, which helps a bunch at the longer focal lengths. It is designed for the cropped sensor cameras such as you XSi. I have the earlier 18-250 lens on my older Canon D60 and am reasonably satisfied with it.
steve
i want one
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very long…
perks?
Would've thought Abram's Star Trek would've got a nod for Best Lighting, I've never seen so much Artistic use of Lens Flare!
i don’t know where you got the idea that you are put to sleep during the surgery but you are wrong you are completely awake they just apply the anesthesia to your eye so it is comfortable and the procedure goes smoothly they need you awake.
i had one it ws very usebul and i i have no idea what happen to it i think im goign to order one
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Yes, of course. Fibre optics generate no heat so put what you like on the tree. The only thing to watch out for are the ventilation holes in the top of the "tub" which houses a very powerful bulb. Do not block these by standing stuff on them.
chrono trigger ? hauhauahua
Your sensor is half the size of a full frame sensor, so your multiplication factor is 2x (that should be in your cameras manual)
Rob Nock is right, "For a camera with a 2x crop factor it would be 34/2 or 17mm to 80/2 or 40mm so the lens would be 17-40mm.)
ya cidden gerizekalının önde gidenisin , kusura bakma da sen tasarımcıysan ben de bilim adamıyım.ve HAYAL BILE EDEMEYECEGIN COK SEY HAKKINDA ( bırak hayali iki cümle kursam kilitlenip mavi ekran verirsin bu potansiyelle ) arastırma ve geliştirme yapıyorum ! BOK ATARKEN karsındakinin kim olduguna dikkat et bari ..
The mtm is a restriced thermal device. MIL/LE only. There are other thermal devices that civilians can own. ITAR regs will not let these be exported.
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Look for large aperture and an (English or German) astronomical mount.
In telescopes, $5000 is considered "affordable."
If you want to build a good telescope the materials are easy to find. Willmann-Bell will email its catalog. GotGrit and Newport Glass Works have catalogs on line showing mirror starter kits. For a beginner a main mirror project is usually in the range of 4" to 10" in diameter. There are a few telescope-making tutorials and books on line
A 4" mirror can be hogged, ground, polished, figured, and aluminized in a day. It will take a beginner a few weekends.
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no just that it doesant show the red laser its just a normal mouse
Boy– good question — I assume your club has experienced members. If they do:
10 inch or 12 inch DOB — go ahead and get the object location computer– so less experience members can quickly find objects.
if you still have money then a refractor such as a Stellarvue 80/9d which you can find used on AstroMart, on a polar mount.
and if you still have money something like an LX200 8" or 10" or a similar Celestron SCT again buy used on all of these scopes-
Added up you should be able to find all of these for about $3000 US dollars used in very good shape.
Start with the DOB as your first purchase– say about $900 or less used…. check out a 10" Orion Intelliscope— or a Zhumell
Le Tour Auto Optic 2000 met le cap au sud avec de nouvelles animations en magasin: Pour sa 19ème édition, le Tour…
Um dude hardcore is for fearless players that dont care about there k/d ratio
Can I buy this amazing toy if I live in EU (Slovak republic)? I´m only civilian not a policeman or something similar… Can this be mounted on the head strap for handsfree operation? Picture from the camera looks absolutely amazing. Thanks for video.
Save your money until you've done your homework. There is a book called "StarWare" which is about telescopes, accessories, what you can see with them and how much they cost. You should check it out of the library and read it before going further, otherwise you risk disappointment, and the loss of your money.
While you can see Mars with your unaided eye, to get a decent image of Mars for even casual viewing takes a lot of optical horsepower, and several months of experience at the eyepiece to actually see much of anything.
Unless you have a really good BIG scope (EXPENSIVE), and good skies to match, you won't see anything resembling the spacecraft images you might be familiar with. Through a small telescope (8" diameter or smaller) Mars is a difficult planet to observe. The details are fine, faint, and fleeting. The contrast is low, and the local atmospheric conditions make it seem as if you were looking through a swimming pool.
So, save your money, find an astronomy club, read books and magazines, and then get a telescope. And binoculars are a really good way to start with basic stargazing.
Sehr schöne Feature, insb. beim Anzeigen großer Bilder (Schuhkino, Zoom bei MouseOver), …
Meghan currently serves as the Project Manager for the AmeriCorps*VISTA Program at Pennsylvania Campus Compact. In 2004, Meghan served as a Corps Member in the Western Region of AmeriCorps*National Civilian Community Corps. She blogs about career advice for AmeriCorps alums.
BEAUTIFUL !
NO they are some bit related but not much… It was invented my some retard who thought it would be funny to make 1 type of demented fish with another to creat a worse demnted fish… They are in a way some bit realted..
For more information about other fish you can just like… Talk to me at
or my_hermit_crabs@yahoo.com
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