This Is the i. Phone 8 You Should Buy. It’s that time of year again, folks, but this time shit’s a little more complicated. Apple turned heads at the annual i. Phone lovefest by introducing not just one, not two, but three new i. Phones—one of which is a pricey monster we’ve addressed in another post. If you’re thinking about placing an order for an i. ![]() Phone 8 on September 1. PT/3am ET), however, we’ve got some tips. Should you get the beefy new i. Phone 8 Plus? Should you spring for 2. GB of storage? Should you finally switch to T- Mobile and its litany of appealing offers? You should do a lot of things in your life, including reading this blog post in full. ![]() It might just save you a few bucks. FOR MOST PEOPLE…Buy the 2. GB space grey 4. 7- inch i. Phone 8 on Verizon. Why the little one? It’s the best size.
![]() The latest PC gaming hardware news, plus expert, trustworthy and unbiased buying guides. Ever notice how Christopher Nolan’s movies (Interstellar, Inception, The Prestige) feel like an anxiety attack? Well, maybe that’s overstating things a bit. But. Okay, for most people, it’s the best size. The i. Phone 8 Plus, like the i. Phone 7 Plus, will be fun for a select group of people who like holding pancakes in their hands and taking extra special photos with the dual camera system and paying a hundred bucks more for those privileges. But the 4. 7- inch screen on the i. Phone 8 is enough real estate for the average user. It fits better in your hand, your pocket, and your bag. It’s a better deal. The camera proposition is an interesting one, however. When Apple introduced the i. Phone 7 Plus, the major difference between the big phone’s camera and the camera on the i. Phone 7 was the extra lens and the bokeh effect. This year, both cameras get bigger 1. Download Solid Email Scanner Full Crack Membrane Under TilePhone 8 Plus that you can’t get on the i. Phone 8 is something called Portrait Lighting. This lets you adjust the lighting while the dual- lens camera is in Portrait Mode. It looks cool, but it’s also a parlor trick that you can only use in specific circumstances. In conclusion, the i. Phone 8 camera is fantastic enough for most people. Why 2. 56. GB? The question here is really, “Why not 2. GB?” Apple doubled the maximum amount of storage for the new model, from 1. GB in the i. Phone 7 to 2. GB in the i. Phone 8. Dollar- for- dollar, storage has never been cheaper in an i. Phone, so you can rest easy knowing that. Meanwhile, the only other option for an i. Phone 8 is 6. 4GB. That’s a lot of storage, but the improved camera means you’ll be taking more photos and videos that take up more space. You might fill up your 6. GB and regret not getting more storage. You likely won’t regret spending an extra hundred dollars for the 2. GB and never thinking about storage again. Why Verizon? In years past, the choice of carrier has been an easy one. Verizon has always had the best, biggest, and most most dependable cellular network. Its LTE offerings have always been supreme. Customer service, less so.) But in the past year or so, T- Mobile has made impressive progress in challenging Verizon’s place at the top of the totem pole. The crowdsourced data from Open. Signal actually has T- Mobile beating Verizon in many categories for the first time ever. But we’re talking about what’s best for most people. According to the folks at Wirecutter and several other independent ranking services, Verizon is still the better choice for the majority of the country. The difference in performance is most impactful when looking at urban versus rural areas. While T- Mobile continues to improve in cities, it still lags behind Verizon in the sticks. Obviously, you can see for yourself which carrier works best for you, but think about it this way: if you buy the Verizon i. Phone (GSM and CDMA), you can easily switch to T- Mobile at a later date. If you buy the T- Mobile i. Phone (GSM- only), you can’t. Why black? Better resale value, full stop. FOR THOSE WHO ARGUE WITH OUR SINGLE RECOMMENDATION…You should wait for the i. Phone X. This one cuts deep. Who knows why Apple decided to release one new i. Phone in September and another in November, but it happened. Some super fans will undoubtedly buy an i. Phone 8, only to upgrade to an i. Phone X when it starts shipping on November 3. If you want to be that person, God bless you. If you’re willing to wait, you might consider skipping the i. Phone 8 altogether and spending a cool grand on the i. Phone X. Aside from the hip factor of the anniversary phone, the i. Phone X offers the biggest screen of all the new i. Phones, new facial recognition features, and an even better camera. It’s more expensive, and you’ll have to wait longer. However, if you’re looking for the biggest upgrade from your current i. Phone, the i. Phone X is it. You should buy an i. Phone 8 Plus, if you love a big screen. Don’t buy an i. Phone 8 Plus for the camera alone. The bokeh effect in Portrait Mode is cool and the new Portrait Lighting seems neat. You can do accomplish these results in free photo- editing apps and desktop software, however. Here’s an app for $1 that will simulate the bokeh effect. Here are a buttload of apps that let you tinker with lighting and colors. The new and improved i. Phone 8 camera will take great photos, and you can improve them for much less than the extra $1. Phone 8 Plus. You can’t make the i. Phone 8 screen bigger once you buy it, however. So if you’re going for the i. Phone 8 Plus, do it for the screen—not the camera. You should buy Apple. Care+. Are you clumsy? Then spring for Apple. Care+. For an i. Phone 8, it will cost you $1. That doubles your one- year warranty for manufacturer defects and gets you lower prices on repairs. If you completely destroy your device, a replacement will cost an additional $1. If you crack the screen, that repair will cost just $3. So if you’re one of those people who tends to walk around with a screen that looks like abstract art, pay for Apple. Care+ when you buy the phone. A third party screen replacement alone could cost the $1. Apple’s insurance program. You should use the Apple Upgrade Program. Do you need financing for your new i. Phone? And do you also want Apple. Care+? If yes, the Apple Upgrade Program is a no- brainer. For an i. Phone 8, it will cost you $3. APR. The program also covers the cost of activation on AT& T, Verizon, or Sprint. And the Apple Upgrade Program lets you trade in your phone for the new model after a year. This is not a trick. The Apple Upgrade Program just splits up the cost of the phone over the course of two years and gives you that upgrade benefit. If you can pay cash, by all means burn that paper. But you might as well use the Apple Upgrade Program if you, well, if you want an upgrade in a year. You should switch to T- Mobile. T- Mobile is the carrier that could. It’s the little guy that’s been screaming and screaming for the public to pay attention to it for years, and now, against all odds, T- Mobile is actually a pretty good alternative to Verizon or AT& T. T- Mobile’s coverage has never been better, and its speeds have never been faster. As mentioned above, Open. Signal now recommends T- Mobile over Verizon, the longtime favorite. Plus, if you sign up for T- Mobile, you’ll get all those “uncarrier benefits” like unlimited data and free wi- fi hotspots. If all that sounds awesome, go for T- Mobile. Be aware, however, that T- Mobile still suffers in rural areas and that many of those uncarrier benefits are things are things you’d never use. Some of those benefits, like the new “Netflix on Us” perk, are also misleading. City dwellers and penny pinchers will probably love T- Mobile, though. You might too. You should buy the 6. GB i. Phone 8. Are you a cloud fanatic, someone who uses apps like Dropbox or Google Photos to avoid storing data on your devices? Then the 6. 4GB i. Phone 8 might be enough for your. Here’s a quick little test. Do you currently own a phone with 3. GB or less? Do you have more than 1. GB of space remaining? Do you always have more than 1. GB of free space on your phone? If you answered yes to all of these questions, the 6. GB i. Phone is probably enough storage space for you. Save the hundred bucks and have fun trusting the cloud. You should buy the new gold gold i. Phone 8. Express yourself, my friend. Sam's Laser FAQ - Items of Interest. Sam's Laser FAQ, Copyright © 1. Samuel M. Goldwasser, All Rights Reserved. I may be contacted via the. Sci. Electronics. Repair FAQ. Email Links Page. Back to Sam's Laser FAQ Table of. Sub- Table of Contents. Introduction to Items of Interest. Laser Power, Photons, How Much Light?, Beam Profile. Laser Power Meters. Gain, Stability, Efficiency, Life, FB versus DFB Laser. Pulsed/Average Power, Q- Switching, Ultra- Short Pulse Lasers. Laser Optics. Laser Wavelengths. Laser Visibility and Color. Laser Beam Spectral and Other Effects. Speckle, Coherence, Stability, Polarization, Noise. Beam Collimation, Divergence, Focus. Laser Beam Profiles, Cleanup. Laser Beam Splitting and Combining. Diffraction Gratings, Pattern Generation. Modulation and Deflection. Other Types of Lasers and Related Devices. Laser Myths and Fantasies. Laser Humor. Back to Sam's Laser FAQ Table of. Back to Items of Interest Sub- Table of. This chapter represents a potpourri of general laser information. Basically. when something interesting and relevant to lasers shows up on one of the. USENET newsgroups or elsewhere, it gets stuck in here. Therefore, given the. As always, I welcome contributions to help expand quantity and. Topics not covered here may often be found in the chapters on specific lasers. For example, information on mode structure and coherence length is in the. Helium- Neon Lasers, specifically. Longitudinal Modes. Here are meanings of a few acronyms and abbreviations commonly used with. More will be added as I think of them or am reminded. For the most part, I explain such terms when first used in a given section. AR - Anti Reflection (coating). The coating on an optical surface to. This produces the blue or purple. Both surfaces of the OC (see below) mirror of a laser may be. AR coated (though you cant detect this on the inner surface which also has. OC coating). HR - High Reflector (mirror) or High Reflection (coating): The totally. HT - High Transmission (Coating). Probably similar to AR coating (this. OC - Output Coupler: The optic that couples the beam out of a laser. Usually, this is the partially reflecting output mirror of a laser. The OC reflectivity and spectral response will depend on the type and size. However, for. some lasers like green DPSS types, the optic from which the beam emerges. HR) mirror for the fundamental wavelength and the actual. However, I still consider the mirror. Dielectric mirror or coating - A surface built up from multiple. These are also called 'dichroic'. Dielectric mirrors can have nearly perfect (1. Note that throughout this document, I use the term 'dielectric' in reference. Nowadays, it apppears as though. CW - Continuous Wave. A laser that operates with a constant output. The opposite is a pulsed laser which produces short. A Quasi- CW laser. W - Watt. A measure of power (electrical, optical, mechanical) equal to. W is kilo. Watt (1. W, m. W is milli. Watt. (1. 0- 3. W, u. W is micro. Watt (1. W, n. W is nano. Watt. A few on- line references with just a bit more extensive information can be. And, of course, general on- line encyclopedias like. Since laser and optics deals with units on scales from the very small to the. I couldn't figure out a better place to put them, here are. Source: "The NIST Reference on Constants, Units, and Uncertainty".). Name Symbol Factor. M 1. 06. giga G 1. T 1. 01. 2. peta P 1. E 1. 01. 8. zetta Z 1. Y 1. 02. 4. The "u" should really be the Greek symbol for "micro" but I'm too lazy to use. HTML code. They make a big deal out of the special case of kilogram which is the only SI. So, the SI police will come get you if you write something. Luxpop has calculators for a variety. Gaussian beam propagation. Back to Items of Interest Sub- Table of. Laser Power, Photons, How Much Light?, Beam Profile. Any given laser - be it a He. Ne, argon ion, CO2, or other CW laser; or a pulsed. Nd: YAG, Ti: Sapphire, or excimer, will have two, maybe three. The manufacturer's power rating based on model. This is the one you find. For He. Ne lasers, there is a single rating since these are generally. Example. (Spectra- Physics He. Ne laser model 1. He. Ne laser): 5 m. W. For CW lasers which have variable output power like argon ion and CO2. Example: See the chart in the section. Argon/Krypton Ion Laser Tube Life. Similarly, pulsed lasers like flashlamp pumped Nd: YAG may have a chart of. However, note that pulse- to- pulse variations of 1. The actual measured power output at the time of manufacture. This value. or chart may be provided with a certification document or hand printed. As the laser gets. Example (for the Spectra- Physics model 1. He. Ne laser): 6. W. The CDRH sticker rating. This is the MAXIMUM power rating for the. CDRH designation). However, a much higher. A He. Ne laser produces its maximum output power at the nominal operating. Example (for the Spectra- Physics. He. Ne laser): 1. W Max, Class IIIb Laser Product. Where the output power of a laser increases with increasing tube current. Unfortunately, when people offer used or surplus lasers for sale, they often. CDRH sticker rating (a) because it is the only one that may be. HIGHEST and sounds more. See the section: Buyer Beware for. Laser Purchases. Here are those definitions you always wanted! Portions from: Dr. Mark W. Lund (mlund@moxtek. A Lumen is a quantity of light, the same kind of unit as a watt, but. If you are looking at the specification of a light source Lumens are the. A Lux is a lumen per square meter, which we might call illumination. It is how much light that. A Nit is a lumen per square meter per steradian, which we might call. If a Lux of illuminance. Nit of luminance. A Candela is a lumen per steradian. It is used for "point" sources. Put another way, Candelas are a measure of luminous intensity through an. For an isotropic. Candela is equal to 1 lumen per steradian. There are 4 x pi or. A 1. 2. 6 lumen. isotropic source would then produce 1 Candela. This doesn't really apply to. However, it is still possible to define the Candela. So, if your laser put out 1 lumen over. Candelas would be 1. Candelas. I (Mark) was at one time a true expert on photometry and radiometry and I still. LED with another because every company. Warren Smith gives an admirable discussion of photometry in his book "Modern. Optical Engineering". Or, check out the Lighting. Design and Simulation Glossary for definitions of these and other related. A Radiometry versus. Photometry FAQ by: James M. Palmer (jpalmer@azstarnet. FAQs are ever fully developed!). PDF Version also. From: Ian Ashdown (byheart@direct. A foot- candle is a unit of illuminance, which is defined in ANSI/IES. RP- 1. 6- 1. 99. 6 (Nomenclature and Definitions for Illuminating Engineering), from. Illuminating Engineering Society of North. America as "The areal density of the luminous flux incident at a point on. In plain English, illuminance is the quantity of light arriving at a. The point does not have to be located. One foot- candle is equivalent to one lumen per square foot (where a lumen. A wax candle flame has a luminous intensity (or equivalently, candlepower). If you hold the candle one foot away from a. It will be 1/4 fc at. Brightness is a psychophysiological phenomenon that cannot be measured. The term "photometric brightness" used to refer to luminance, but. Let me rephrase that: it. There is an understandable but technically accurate description of photometric. From: Don Klipstein (don@misty. A lumen is defined as the "luminous flux" of 1/6. Terahertz, or a. wavelength of approx. One thing worth noting is that a. THz. monochromatic light.) Light of wavelengths other than 5. The number of lumens. I believe is very close to but not exactly 1). A "USA- usual" 1. A1. 9) light bulb. Lumens per watt is a measure of efficiency in converting electrical. Multiply this by the watts dissipated in the LED to. A typical red, orange, or yellow or yellow- green LED has a. A blue, white, or. A and gets . 0. 7 watt at 2. A. A candela is a lumen per steradian, or "beam candlepower". Actually. as mentioned above, the candela is a primarily defined metric unit. So lumens are. candelas times the beam coverage in steradians. Candelas are lumens. Ideally, that is - . So you may now be wondering what a steradian is. It is 1 / (4 * pi) of. To get steradians from the beam angle. Steradians = 2 * pi * (1 - cos (. NOTE: There are a few other expressions equal to this. Proving that. is homework for 1. So if you determine the steradian beam coverage and multiply that by. The beam is not uniform and it does.
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