来源:PChome.net 作者:ruoqiz 2004-11-08 浏览19535次
序言: 前日购进一支LENSPEN镜头笔,在使用过程中发现笔触很不好使,擦过之后会在镜头上留下印迹。怀疑它是假冒的。今日在五棵松摄影器材城的锐意摄影器材行买到一支真品,使用后感觉很好。经过观察,我发现真品和伪品在一些主要特征上有明显的不同,特意拍下来发到论坛上,为大家日后采购做一个参考。



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北京均益为您提供展览器材,展览展示,展览,展厅设计,广告材料,广告器材,舞台搭建,舞台设备,展台器材等相关服务。均益北京展览公司是国内领先的资深展示公司,以完善的营销渠道和服务网络,国际化的设计观和实务运作享誉业界;提供专业化、规模化、国际化、品牌化的展览展示服务——博物馆、科技馆、规划馆的环境空间,特装展位设计及搭建,大型会议活动的策划及实施,企业展厅的策划设计等。
You may sometimes find yourself driving down the road, sun shining in your eyes, as you search in vain for those clip-on or magnetically attached sun lenses that came with your prescription eyeglasses.
At times like these, you might find that prescription sunglasses are much more convenient and more than worth the additional investment.
Contact lens wearers, too, may find wearing prescription sunglasses is sometimes a far more practical alternative outdoors. For example, you may not want to wear your contact lenses on the beach where your eyes can become itchy and watery as you battle the effects of sand, sun, wind and water.
Even the non-prescription sunglasses you wear over your contact lenses may not provide enough protection. Also, wearing your contact lenses while swimming is a bad idea because of the possibility of potentially serious eye infections caused by microorganisms in the water.
But with prescription sunglasses, you have the option of wearing them anytime outdoors without the need to search for clip-on sunglasses or deal with contact lenses.
If you have a vision problem that requires corrective prescription eyewear, you have several choices when it comes to sunglasses. Prescription sunglasses are available for virtually any lens prescription, including bifocal and progressive lens options if you are presbyopic and need lenses to help you read that magazine or book at the pool. These types of sunglasses also can help you if you need reading glasses only or if you wear contact lenses to correct only your distance vision and still need that additional boost for reading.
You might also consider prescription swimming goggles when it comes time to take a dip.
The styling of prescription sunglass frames is nearly the same as with non-prescription sunglasses. Almost all of the same fashion, designer and celebrity eyewear options apply.
One area where availability is limited is when it comes to certain wraparound sunglasses that curve around the head. Prescription sunglasses made with extreme curves typically distort vision. However, several manufacturers offer wraparound prescription sunglasses with less extreme curves. Typically these are available in a limited prescription range, so you would need to discuss options with an optician.
Prescription sunglasses are available in all lens materials, including high-index, polycarbonate, regular (CR-39) plastic, Trivex (a lightweight material similar to polycarbonate) and glass. Though glass lenses arguably provide the best optical quality, they are no longer the most popular choice for sunglasses. This is because they are much heavier than lenses made of other materials, and they can shatter easily. However, they are still available if you request them.
You don't have to sacrifice fashionable style or high-level sports performance if you want prescription sunglasses. At top are Shannon, Jess and Alyssa from the JLO by Jennifer Lopez sunglass collection. Below is Akamai by Maui Jim. All can accept prescription lenses.Another sunwear option is to purchase prescription eyeglasses lenses that have a photochromic tint. These lenses are often called "transition lenses" because the leading manufacturer of plastic photochromic lenses is a company called Transitions Optical. Photochromic lenses automatically darken in sunlight and then return to a relatively clear state indoors.
Photochromic lenses are very convenient, but they do have a drawback: UV rays are required to activate the tint. Because most car windshields block a significant amount of UV, photochromic lenses usually don't darken very well inside a car.
For the ultimate prescription glasses suitable for all lighting conditions, some opticians recommend eyeglasses with photochromic lenses and a frame with integrated magnetic clip-on sunglasses. The photochromic lenses provide automatic sun-sensitive light adjustments for greater comfort outdoors, and the clip-on sunglasses can be conveniently stored in your vehicle for those bright, sunny days when you need a darker driving lens. (For more information, read our article about photochromic lenses.)
As with non-prescription sunglasses, your primary concern when buying prescription sunglasses is that the lenses block 100 percent of the sun's harmful UV rays. UV protection is unrelated to the color and density of the tint in sunglass lenses, so you can choose any lens color and darkness you like, as long as your optician verifies that the lenses provide 100 percent UV protection.
For added glare protection from light bouncing back from reflective surfaces (like water, snow, sand and concrete pavement), polarized prescription sunglasses are also available. (For more information, read our article about polarized sunglasses).
Many optical shops offer special discounts on prescription sunglasses if you purchase them at the same time you buy your regular eyeglasses. Ask your optician for details.
In learning how to select eyeglass frames, there are steps that can be taken to avoid a sloppy purchase that results in poor fitting eyeglasses frames. For many people in the market for new frames, making a fashion statement can sometimes be as important to the consumer as quality of vision. However, it is important to remember that knowing how to select eyeglass frames is not strictly an enhancement of one’s beauty. Comfort also plays a vital role in determining whether or not a purchase is made.
If buying eyeglass frames for the first time, buying from an experienced optician you can trust is often a good place to start. Sometimes a sales representative may be more concerned with making a sale than actually finding the right pair of eyeglasses frames. Be sure that you feel comfortable with asking the sales person how to select eyeglass frames or else you may be stuck with a pair that fit horribly or mesh with the style you were looking for in the first place.
Remember, everyone’s face is shaped slightly differently than the next and sometimes face shape may change the shape of the new glasses frames you want to buy. There are a few tips that can be followed in looking for the perfect pair of rimless glasses frames. If you have plenty of facial hair, larger frames tend to mask certain features. Smaller cut bifocal glasses frames may enhance a bearded look. Also, in knowing how to select eyeglass frames, try to avoid frames larger than your head. In other words, if you have a smaller shaped head smaller frames will not mask your features.
A few tips to consider in knowing how to select eyeglass frames is to make sure your eyes are comfortably positioned with the middle of the lens. Avoid large set frames if your eyes are set close together. When wearing the glasses frames, your eyebrows should line up parallel with the top part of the frame of your glasses. Lastly, choose a frame set that appears different from the shape of your face. If you have a rounded face, your frames should probably be a shape other than round...
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There is a misconception amongst the bespectacled people that eyeglasses actually lower their glamour quotient. But no, indeed they are wrong and it enhances a splash to anyone's glamour but you should pick the right one that suits you. A few tips and tricks could actually help you guys to getting the most from your prescription eyeglasses experience. I would share a few of them with you in the following paragraphs.
1. Combine the rimless ones with lens that have anti reflective coating, you look as good as not wearing any corrective eyeglasses.
2. Go a little personal. Did you ever consider adding personality to your prescription eyeglasses? For that matter even if you don't require wearing any corrective glasses, wearing a lens with a stylish frame will help you get a makeover in your looks in a jiffy.
3. Care for your eyeglasses. Use a micro fiber cloth and clean your eyeglasses regularly. You can also wet the lens and then use the cloth to clean the glasses which is a good idea. You can even wash the lens with ammonia-free detergent or cleaning solvent bought from good lens store and washing this way prevents the loss of coating off your lens.
4. Color of the lens could make hell of a difference. In case you go spend sometime playing, colored lenses would be just great. Brown or honey colored ones suit for boating, fishing and driving and even tennis. In case you go out for hunting, yellow or light amber colored polarized glasses lenses would be ideal. Black and gray go well with golf and skydiving and flying. For skiing wine red or vermillion colored lens suit fine and green goes well in general for any kind of an activity. Color on lens removes the boredom tag off your face.
5. If you ever wondered for what the anti reflective coating is , well then its done to bolster light transmission and color on lens will reduce the transmission.
6. A handy tip, when you notice that the screws have become loose and backing off the eyeglass frames, apply a coat of nail enamel (preferably non-colored or the transparent one) over the screw and it should help. However, while coating the screw though be extra cautious so the enamel doesn't come on to the lenses.
7. Hide the thick lens. You will never want anyone to notice the heavy prescription eyeglasses you are wearing. You can hide the thick lens if you pick frames with wider temples or arms
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Today, prescription eyeglasses have become much more than just as vision correction tool. It has become a fashion accessory that adds to your style quotient. However, buying high quality prescription glasses on the high street has definitely become a costly affair. Even the simplest pair of spectacles starts from about USD100.
The reason? Well, it is because these costs do not just include the price of the eyeglasses alone. They also include the huge overheads, store rent and large mark-ups. All these factors lead to a tremendous increase in the prices of eye glasses.
One of the best ways to save money on eye wear is buying cheap glasses online. There are several online cheap eyeglasses stores that sell prescription glasses at almost half the high street prices thereby benefiting the consumer greatly. From conventional fully rimmed glasses, semi rimless eyeglasses and rimless glasses or trendy and offbeat designer glasses and prescription sunglasses, these eyeglasses stores have it all. These glasses stores also offer different optical lens types like bifocal lenses and varifocal lenses.
Be it reading glasses or distance eyeglasses, visitors just need to select the eyeglass frames, enter the prescription and place an order. In these simple steps, the new glasses would be delivered right at the door step.
Another frequently asked question about buying prescription glasses online is about the eye glasses quality. Making a purchase online in no way compromises on the quality or looks of the eyeglasses. In fact you can get the best of the brands and glasses on the various online optical stores.
Buying prescription glasses online becomes a cheaper option mainly because of the significantly lower overheads. Buyers no longer need to pay for the glasses store rentals or sales staff.
Apart from the cost effectiveness, buying cheap glasses online also offers great convenience and shopping experience. Customers can browse through a huge range of cheap eyeglasses from different categories in a few clicks from the comfort of their homes.
All these factors make the Internet quite a favourable option to buy your preferred pair of cheap glasses. So just get clicking and pick up a stylish pair without burning a hole to your pocket!
PresesciptionGlassesOnline.net is one of the best online provider of prescription glasses, designer glasses, bifocal glasses, and varifocal glasses. He has an extensive experience in selling prescription glasses online with best customer service and quality products.
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北京均益为您提供展览器材,展览展示,展览,展厅设计,广告材料,广告器材,舞台搭建,舞台设备,展台器材等相关服务。均益北京展览公司是国内领先的资深展示公司,以完善的营销渠道和服务网络,国际化的设计观和实务运作享誉业界;提供专业化、规模化、国际化、品牌化的展览展示服务——博物馆、科技馆、规划馆的环境空间,特装展位设计及搭建,大型会议活动的策划及实施,企业展厅的策划设计等。
It is a common practice that eyeglass frames and lenses are sold separately. Eyeglass users are entitled to select lens types and frame styles in two steps. Even if there are still some eyeglass stores selling glasses especially sunglasses in whole pairs, they are not the majority. Moreover, prescription eyeglasses make it even more necessary to choose lenses and frames separately. With a careful consideration, most customers would notice that the frame usually accounts for the major part of the price of a whole pair. Eyeglasses lenses are relatively cheaper than frames. This fact may further encourage eyeglass customers to pursue discount eyeglass frames. Actually, most manufacturers will provide discount designer frames apart from their lenses. The best place to find these discount frames is the Internet. Most online stores enable customers to search eyeglass frames separately and they will combine complete pairs of glasses in a final step.
While searching for discount eyeglass frames online, there are some useful tips. In other words, customers must evaluate certain factors carefully. These factors are essential for a successful purchase. One factor is the frame quality. Discount eyeglass frames are worthy of their low prices only when the quality can be ensured. A pair of high quality eyeglass frame can usually last several years without breakage. It is a fool transaction if frame quality is sacrificed. Shopping discount eyeglass frames in person makes such a check easy. But someone may think it is impossible to check frame quality when purchasing online. In this case, it is important to check the reviews left by other customers who have bought frames from the same online shop. These reviews can always reflect the fact that whether most customers have utilized the shops products satisfactorily.
A second factor to evaluate an online optical store is to check for a guarantee. A responsive and reputable online store would offer some kind of guarantee of their discount eyeglass frames. Currently, there are many guarantee policies, such as replacing parts for free and a simple and easy-to-understand return or exchange policy. Any one of such kinds of guarantee often suggests that the eyeglasses shop is trusted. Discount frames from such a shop will more probably be quality-ensured.
Choosing discount eyeglass frames online should not sacrifice a wide selection. It is still a pleasure choice to trust an online store that offers different kinds of discount eyeglass frames. Compared with a site that offers only one or two kinds of discount frames, others providing a larger selection of similar products are more preferable.
Steps of Buying Glasses Online
Knowing the widely propagated benefits of buying glasses online, more and more eyewear users opt to switch to this source. In fact, online eyewear stores are absolutely capable of offering eyeglasses or contact lenses with good quality. This is simply because the final source of either an online vendor or a local store is the same, say, optical manufacturers. But an advantage kept by online shops is that they usually have a larger inventory. Other benefits of purchasing eyeglasses online contain competitive prices, quick delivery, and no office visit and so on. While most of these advantages have been commonly acknowledged by the public, there are still necessary steps of how to buy eyeglasses online. Currently, part of the Internet is filled with prescription glasses stores of various sizes and different degrees of fame. Without certain steps or guideline, it can be quite deficient while buying glasses online. This problem is also magnified by the wide variety of eyeglass options. In some cases, purchasing glasses online without enough tips would offset the convenience granted by this source.
There are different ways to buy glasses online. But for those with little knowledge of online glasses stores, the main tool is search engine like Google.com or Yahoo.com. It is worth mentioning that different eyewear products require customers to input different key words. When a customer wants to buy fashion eyeglasses, the most efficient way is to type the exact brand name. The search engine will return many destination websites who contain the wanted products. It is obvious that online vendors listed in the first page or pages are more popular among online buyers. It is recommendable to choose one from such a group. Dissimilarly, it is more effective to type eyeglass types when a customer plans to buy prescription and non-branded eyeglasses. Those key phrases include metal frame eyeglasses, polycarbonate lenses, and rimless glasses and so on. The reason is that nearly all online websites selling prescription or non-branded spectacles organize their products in a way different from branded stores.
Getting several target websites from a search engine, the next step is to evaluate their prices one by one. Most online shops enable customers to make searches at the website for specific products. Some people would think it is time-consuming to visit each websites. In this case, price- comparison websites are helpful. It is also necessary to read details of shipping and return or refund at the target website. In case of a problem associated with the product, this information is needed.
Cheapglasses123.com is the emerging online optical store selling high quality eyewear, such as prescription glasses (single vision myopic glasses, reading glasses, bifocal and progressive glasses etc.,), prescription sunglasses (with RX tinted lenses), prescription sports goggles. CheapGlasses123.com guarantees lowest possible price in the market.
If somebody claims that their cheap designer prescription glasses are scratch proof, do not believe them. In normal cases telling negative reviews about their competitor is the company's strategy that the retailer of eye glasses uses. However, plastic lenses have coatings that are resistant to damages as compared to ordinary glasses. There is still no assurance that you can complete scratch proof glasses.
One must remember that coating will not prevent deep scratches if lenses are subjected on rough surfaces, but somewhat lessen all the little scratches that may happen in daily usage, maintaining the glasses clearer for a longer time. These depend on how you use it. Proper handling is important. Even if you can purchase cheap designer prescription glasses it is still important that you maintain and protect it from harmful scratches.
There are fake items available in the market. It is important that you know how to distinguish which are the authentic glasses and which are not. To make sure that you will be purchasing the branded product it is best to purchase it online with the reliable stores. Remember, these glasses will be protecting your eyes. Therefore you need to find durable prescription glasses.
The major problem in purchasing prescription glasses in the net is the failure to understand the details of prescription. There are websites that provides pages where the company explain technical terms for deeper understanding of prescriptions. If you cannot clearly describe the prescription glasses you have the choice to fax the prescription to them.
The great thing in shopping in the net is that one you can easily track the present trend and the upcoming styles and check the price accordingly. this is like getting thousands of showrooms of exclusive prescription glasses right at your living made specifically for you.
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Individuals with refractive errors may have to wear eyeglasses in order to get clear vision. This way is in most cases the most convenient solution to vision problems. But some hyperopic or myopic patients think that their appearance will be negatively affected by those eyeglasses. They switch to contact lenses for natural look.
However, eyeglasses do not always spoil one's outward appearance. Currently there are a great variety of eyeglass styles and some of them are good and stylish. In fact, wearing eyeglasses can provide a whole new look for the wearer. Those people should select a pair of eyeglasses that suits personal needs, such as face, looks as well as personality.
Different people need eyeglasses in various styles. A pair of eyeglasses should complement the wearer's particular style. A single pair of eyeglasses can never suit everyone. One of the decisive factors is the wearer's face shape, which determines what kind of frame should be selected. Individual personality always determines the size of eyeglasses. For instance, an outgoing person is more likely to choose eyeglasses with a bold statement. And small and thin glasses suit a shy and timid person.
It is not necessary to select branded eyeglasses every time. Branded eyewear is usually more expensive. The most important criterion is to choose one pair that compliments personal look perfectly. When a person can not get the right frame from a particular brand, he can simply switch to another brand. Of course, both branded and unbranded eyeglasses deserve equally careful consideration while making a selection.
Personality should be given enough priority when a person chooses a pair of eyeglasses. Eyeglasses must complement one's personality. In addition, customers should also consider the purpose and venue of their eyeglasses. For example, some eyeglass styles are suitable for office work while some others work better with active occasions. Eyeglasses that are excessively bold or loud should be avoided. However, offices and workplaces that are very liberal and open often allow individuals to wear different styles of eyeglasses with bold colors and shapes.
Cheapglasses123.com is the emerging online eyeglasses store selling high quality eyewear, such as prescription eyeglasses (single vision myopic glasses, reading glasses, bifocal and progressive eyeglasses etc.,), prescription sunglasses (with RX tinted lenses), prescription sports goggles. Cheapglasses123.com guarantees lowest possible price in the market.CheapGlasses123's return and refund policy makes any purchase risk-free ones.
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