PhotographyAttic – Page 7 – Photography Gear Guides, Techniques and Tips

Polarizing Filter and cross polarization

If you have a computer with an LCD monitor and a camera with a polarizing filter on the lens you can create some really colourful photos like this:

All you do is place a piece of plastic (the above is a cd case with ice on the surface) in front of an LCD screen and photography it using a camera that has a polariser attached to the lens (or held in front of the lens)
By rotating the filter you can increase the strength (saturation) of colours.

Try with cd or cassette cases, plastic glass, plastic cutlery, geometry items, filter cases and other similar hard plastic items.
The patterns revealed show stress in the plastic.

Stepping rings save you money

Stepping rings are really useful additions to your filter collection. They are slim rings that have a male thread on one side and a female thread of a different size on the other. They are designed to allow a filter with one diameter be used on a lens with a different diameter.

Stepping rings come in a wide range of sizes

You may, for example, want to use a 55mm thread diameter filter on a lens that has a 52mm thread. A stepping ring is what you need.

Stepping rings are sold in two directions – up and down. The direction is always indicated from the lens. So a step up ring allows a bigger diameter filter to be used on the lens, while a step down ring allows a smaller diameter filter to be used on the lens.

Stepping up is rarely a problem, but stepping down can cause vignetting because the filter may starts to mask the optical path, especially if the stepping increment is steep or if the lens is a wide angle. It’s always safer to step up.

The advantage of using stepping rings is that you are often able to use just one size filter on a range of lenses. especially if you plan carefully.

Say, for example, you have the following three lenses:

A wide angle with a 58mm thread, standard zoom with a 52mm thread and a telephoto lens with a 62mm thread. You could buy a set of 58mm filters to fit straight on the wide angle along with a 52-58mm stepping ring for the standard zoom and a 62-58mm stepping ring for the telephoto.

PhotographyAttic has a range of rings covering threads from 30.5mm right up to 77mm: Lens Stepping Rings for sale

Where to sell you camera equipment?

Sell to dealer

Harrison Cameras in Sheffield is an example of a great place to trade in your old camera.

You can take to a high street dealer who will give you a trade in valuation. The pawnbroker type shops, offer to buy all kinds of things from Golf clubs to Guitars so they do not have camera specialists in store. As a result it’s a bit of a gamble whether they will over or undervalue your gear. As a rule this kind of shop will offer you the least. Reputable camera dealers, such as Harrisons in Sheffield, will offer more. They usually know what the item is and have a better chance of selling at a higher resale value. But in both cases what you get will usually be about 25-40% of what the selling price is unless you trade in to get a better deal. So if a camera sells for £100 you’re likely to get between £25 and £40. The shop will then put it on show for sale for £80 to £100 and give a 3 to 12 month guarantee.

Advantage to you is you get it off your hands without any hassle, but you may get a minimal amount for it.

Sell to local
Another option is to sell through local classified ad service either online or local paper advert. Use the eBay selling price to get an idea how much to ask.

Advantage you get a good price, disadvantage is you will have to let someone come to your house/workplace to view and you may get messed around.

eBay is the most successful online auction site

Sell by Auction

Auction sites like eBay take this aspect out of the equation. You can charge for postage and can send the item to the buyer so there’s no direct contact. The auction route is a bit of a gamble. Sometimes you’ll get far more than you expected other times it will go for less than you hoped.

If you don’t know how much your item is worth check out our tips on finding out how much your camera is worth

Tips to find out how much your camera is worth?

You may have a camera or accessory you want to sell and don’t know how much it’s worth.

If you’ve inherited the equipment and don’t know what you have in front of you, use Google to search. Look for any identifying features on the item. If it’s a camera it will have a make and a model number. These are usually enough to help you track down the item.

When searching Google switch to search by images. This is the quickest way to pinpoint your gear. When you find a photo that looks like your item open and view the web page. look for descriptive words that tie in with what you have. Sometimes there are different versions of the same product. The Vivitar 283 flash, for example, has been made in three different countries. Leica, for example, had many variations of the same camera differentiated by the serial number.

When you find the exact description of your item switch to eBay. Search items for sale using the description you’ve researched. Then click on Show Only > Completed Listings to get an idea what your item has sold for recently.

Now you’re ready to sell see our article of selling tips

Diffraction filters explained

The diffraction filter is a special effect filter that can be found in a number of filter brands’ ranges.

$Diffraction filter$ The diffraction filter creates spectacular rainbow coloured streaks or star bursts from highlights.

Hoya made the effect popular back in the 70s with their group of filters called Spectral Star.

The Hoya Spectral Star is a conventional starburst filter that added a rainbow-like pattern to the streaks. Hoya had three filters in this range

The Hoya Andromeda is a single line through the photo used to create ghost-like blurs and multicoloured streak from point light sources.

The Hoya Pulsator is a colourful 8 point star burst.

And the Hoya Nebula is a multipoint filter for spectacular colour bursts

The French brand Cokin replicated Hoya’s effects with their series of Diffraction filters which are still available today

The Cokin Diffractor Cosmos 040 is like the Hoya Andromeda

The Cokin Diffractor Univers 041 is like the Hoya Pulsator

And the Cokin Diffractor Galaxy 042 is like the Hoya Nebula

And thanks to Cokin’s universal holder these filters can easily be adapted to fit a wide range of lens filter thread.

Hoya copied the system filter approach popularised by their version called Hoyarex.

The Hoyarex versions are easier to understand as they are named by the number of points. There are also more options to choose from including the following:

It’s not easy to recreate this filter digitally and is well worth adding to your collection. The filter works with glass, water, jewellery and any other item where you can get a sparkle of light to diffract. Some photographers also use them on lasers to create stunning painting with light effects.

Teleconverters

A tele-converter is a budget accessory that will increase your photography options. The most common one is a 2x converter that doubles the focal length of your lens. Your 50mm lens becomes 100mm, your 70-300mm zoom becomes 140-600mm.

Vivitar made a number of converters through the 70s and 80s.

Teleconverters are ideal for photography such as sports and wildlife.

Advantages:

increased magnification
light weight
cheap

Disadvantages:

light loss
quality degraded

Several teleconverters converters for sale here