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07-02-2011, 03:26 AM   #1
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[SOLD] Raynox Macroscopic Lens DCR-250 Super Macro (Worldwide)

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Item for Sale
Raynox Macroscopic Lens DCR-250 Super Macro

Asking Price
AU$60

Item Location
Australia

Item Description
lens is in mint condition and includes a snap-on universal mount suitable for 52mm to 67mm filter size.

The DCR-250 Super Macro lens obtains the maximum macro magnification power when set at the most telephoto position of the zoom lens. The lens is made of high index optical glass elements which produce a rich and razor sharp image.

? Magnification 8-Diopter
? Lens construction 2-group/3-element, Coated optical glass elements
? Front Filter thread 49mm
? Mounting thread 43mm
? Dimension 53mm x 18mm
? Weight 50g(1.8oz)
? Accessories UAC2000 Universal adapter, Lens case, Lens caps,


Please contact me if you require any further details and for postage quotes. I am shipping worldwide, Paypal payments to be sent using the "gift" option. Thankyou

Thanks for looking.





Are you the original owner of the item being sold?
No

Are you selling or trading this item?
Selling

Item Condition (Key)
Used
Mint

Shipping Destinations
Worldwide

Shipping Charge
Shipping at cost, Please contact for accurate price

Shipping Services
Aust Post.

Accepted Payment Types
PayPal Other (Elaborate)

Return Policy & Additional Details
Bank deposit, Paypal (gift) or pickup from Sydney

Paypal (gift) only for international buyers.

Returns accepted if not significantly as described.

Please send me a private message if interested in the item!

07-03-2011, 03:29 AM   #2
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Original Poster
Bump........
07-05-2011, 05:08 AM   #3
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Hi,
Can you tell me what magnicifation/macro does it offer (1:1, 1:2 etc.)
And how much would postage to Ireland be?
Thanks,
Patrick.
07-05-2011, 07:59 AM   #4
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QuoteOriginally posted by dinneenp Quote
Hi,
Can you tell me what magnicifation/macro does it offer (1:1, 1:2 etc.)
And how much would postage to Ireland be?
Thanks,
Patrick.
Close-up lenses are in diopters as eye glasses are. Here is an explanation I came across sometime back:
QuoteQuote:
In order to evaluate the impact of a close up lens, you do the following.

with a close up lens attachged, you effectively change the focal length of your prime lens (i.e. you shorten it.

the effective focal length of the combination is

New focal length = (FL_old x FL_close_up) / (FL_old + FL_close_up)

FL_Close_up = 1 / diopter

Maximum Working distance becomes the focal length of the close up lens, since a 1 diopter lens has a focal length of 1000 mm (1 meter) the maximum working distance with a 1 dipoter lens is 1 meter.

so if you consider a 28 mm lens with a +1 diopter close up lens, at 1 meter distance you will have a magnification ration of 28/1000 or 1:40, but the same close up lens on a 100MM lens, at 1 meter gives you 1:10.

If you add a 5 diopter close up, your maximum focus distance with your 28mm lens will be 200mm therefore the magnification ratio will be 28/200 or about 1:7, but on the 100MM lens a +5 diopter at maximum distance will give you 1:2. (this is getting close to the 1:1 you want, and youo now are working at 1 meter. you will have some ability to come inside this distance as a function of how close you rlens focuses.

To get to 1:1 on your 28mm you would need about a 35 diopter close up lens. (they simply don't exist.)

Minimum working distance is lens dependant upon the minimum focusing distance of the lens you have.


07-07-2011, 11:29 AM   #5
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Hi, How much is the shipping to Brazil?

Thanks
 

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