Contact lenses are much abused eye products and can actually cause damage if not picked wisely. Here are a few reasons why contact lenses should be picked wisely after a prescription and that too after a visit to a qualified eye specialist. To begin with, a contact lens need not be 'fits-all' type. One must get it prescribed. Since a prescription is an authorized statement that clearly mentions what is ok, you can shop with confidence and it feels good that you are doing the right thing. Since buying a pair of contact lens can happen only through a prescription, any website selling 'branded' contact lens are likely to be selling lens that may not be branded and that isn't good news for your eye. If you have been wearing both glasses and contact lens, you are now aware that the prescriptions are a little different from each other. While most of us know what we need a prescription to buy glasses for eye sight problems, the same prescription cannot be used for contact lenses. This means, you need to get a separate prescription for contact lens. Even if you wish to wear contact lens for changing your eye color, you will need a prescription from an Opthalmogist. If you prefer to wear a specific type of contact lens, you can talk to your doctor so that she or he can recommend and also mention that brand in the prescription so that there are no hassles tomorrow. The doctor can also clear any doubt and specify the positives and negatives about any special type of Contact Lens. A prescription will have the doctor's contact details and this way, the dealer can call and check should there be any kind of confusion or if any clarification needs to be sought. Here is a link that might be useful: Contact Lenses

oh,I'm still learning with my xti. It's been great, everytime I learn something new. So I started taking baby steps following directions in the XTi 400D Manual. I found photoworkshop.com/canon to be very helpful. Also, XTisite.com is another. However, makes sure you check out that some of these sites cost money. But, most of the time, they will let you read a few things. It's been interesting. Now that big long lens you spoke of. I too went through the same thing of not realizing it was supposed to be an IS lense to help me with the photograph, unless you have a tripod. Recently, a man I met on a photography forum was speaking about how he was getting rid of most of his long range IS lenses. His reason was, he enjoys and gets as much satisfaction out of the Macros. I have yet to enjoy this anomoly. However, it would be nice to try one of them macros he speaks of. May want to try. Seems to me, smaller lenses have been mostly the cheaper ones. Starr

7 x 35 Guide no= 35/7=5 10 x 42 guide no= 42/10=4.2 The 7 x 35 is a litle brigher. The 7 x 35 has a field of view of 487 ft @ 1000 yards The 10 powwer has a field of view of 293 ft 2 1000 yards. For general puropse use, the 7x35 is the better choice. Its also better for spotting planes due to its wider field. The 7x35 is useful handheld; The 10x42 will be shakey and will need a support. It will be difficult to 'find' a plane quickly due to its narrow view. I own a 7x35 and a 10x50, both used for birding. I do enjoy the greater power of the 10x and use it for special occasions, but the 7x35 has proven far more practical on hikes, etc. The 10x50 is better for viewing the moon. Send the 7x35.

You do not need to spend more money on a bigger camera until you have mastered the one you just bought! The problem with using fx lenses is either vignetting or cropping, they are not designed to match the format of the dx image processor...