Question about Opteka 500mm f/8 for Canon EOS

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Skylight lens How do we install these lens

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The small filters should screw into the back of the lens- also there needs to be one of them on the lens at all times (it's part of the lens design), so there may be a filter already there that needs to be removed before you can put any other in it's place

Posted on Jun 02, 2010

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Posted on Jan 02, 2017

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1 Answer

What's the difference between a roof window and a skylight?


Roof windows are designed to be accessed easily and can serve as emergency exits if necessary. They can also open up to a 45 degree angle, allowing fresh air to enter a room. Skylights, on the other hand, often cannot be opened at all and are much less easily accessed, meaning they cannot be used as an emergency exit. Hope this helped.

Jul 23, 2013 | Building Materials

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My skylight drain is leaking into the car


yes it's either broken or plugged with the skylight retracted look for the drain hose if not look toward the rear of the opening there is probably two drain hoses

Aug 27, 2012 | 2004 Chrysler Pacifica

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A pin hole lens cover for macro photography


Was this an attachment on the front of a lens, or simply a pinhole in place of a lens?

May 29, 2012 | Vivitar 67 Mm Skylight 1a Screw-in Filter...

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I can't figure out where the three filters are installed. I have skylight, nd-2x and 4x


The filters attach to the back of the lens. Remove the lens from the camera. Look where the lens fits onto the camera. Inside you'll see the screw threads that match those on the filters.

Sep 02, 2011 | Vivitar 500mm f/8.0 Mirror (Reflex) Manual...

1 Answer

Small scratch on front lens causing shadow on some photos, in particular on clear blue sky when a small area in the photo appears slightly deeper blue than the rest.


You have only two fix options:-

1. Get the front lens element replaced by Panasonic. This will be fairly expensive. Afterwards, buy and fit a skylight filter to protect the lens.

2. Buy a skylight filter to protect the front of the lens from further damage and use photo processing software to retouch the affected images. This won't necessarily cost much, but will be a real pain to have to do all the time.

Whatever you do, do not attempt to polish out the scratch as this will destroy the lens coatings and will also reshape the lens slightly ruining it's optical qualities.

Feb 03, 2010 | Panasonic Lumix DMC-FZ18K Digital Camera

1 Answer

How do you replace skylights?


Hi,

The steps to replace would be :-

  1. Look over the roof area where the current skylight is located. Will it withstand the replacement of the skylight or is the roof in bad shape as well? Assuming all is well with the roof, continue to 2.
  2. Take measurements of the old skylight footing while you are on the roof. View information on the different types of skylights including size specifications. If you do not have to deal with a change in size, this will be a much easier job.
  3. Choose the type and size of skylight you want to buy. There are factory built and site built units. Factory built skylights are the way you want to go. Factory built skylights will seal to your roof better and offer more protection from severe weather. Purchase it from a website or store.
  4. Remove the old skylight by pulling back the roofing area where the current skylight is set. Use a prybar. Remove any mounting brackets present and take off the skylight. This will expose the hole for the new skylight.
  5. Observe existing roof or attic shafts. These are for the new skylight.
  6. Attach new mounting hardware and insert the new skylight. Make certain you read through the manufacturer's instructions, particularly where it pertains to flashing requirements. Installation instructions will vary widely, depending on the style and brand of skylight you selected. Caulk around the entire base of the skylight. Make sure you have not disturbed anything on the roof (such as shingles) that needs your immediate attention.
  7. Insure that there are no problems where the skylight comes inside the house. Take care of any problems with the ceiling view at this time. Check for leaks and loose connections. Assuming all is well, enjoy your new skylight!
Let me know, if need further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Oct 13, 2009 | Sky Toys

1 Answer

What are the best filters for my canon t70


Any Canon FD lens will work. Also any 3rd party lens for the Canon FD mount.
Filters? depends on what you're shooting, but keep a UV or Skylight filter on the lens at all times. If you drop it, the damage will happen to the filter...not the lens.

Oct 08, 2009 | Canon T70 35mm SLR Camera

1 Answer

I would like to know what these do


Bower is brand name skylight is slightly yellow helps soften light there are diffrent densitys. Filter is mostly used to protect orginal glass of lens from dirt smudges scratches & rough treatment. Keep on lens most of the time.

Hyda brand name. PL 3 i believe to be a dark polarizing filter.

Quantaray 1A4 I believe is a haze or skylight filter.
Haze filter does almost the same as a skylight filter.

Hanimex brand name. Polarizing filter used to shoot through reflective glass or surfaces (water), also in color used to sharpen colors. The reason it is turnable is it is light directional beaning light comes through it at a angal hold up to light & turn it you can see how it darkens or litens. Also can stay on lens when not useing skylight filter.

reason you have 2 is one of each for two diffrent lens, 49mm & 55mm.

Hope this helped. Please rate.Thank You.

Mar 11, 2009 | Pentax K1000 35mm SLR Camera

1 Answer

Filter


Skylight filters don't generally block UV, they change the colour tint optically, which you can do without danger of image degredation in post-processing, so I woudn't really recommend using a skylight filter for digital cameras. I haven't tried a UV filter on my fz10, only my circular polarizer. From what I've heard however, a uv filter may act as lens protection (or use the lens hood), and might in some circumstances reduce haze (rarely), and there are unconfirmed rumours of possibly reducing purple fringing. If anyone could ever confirm this, I might consider one. Otherwise, UV filters also seem peripheral for digital photography. Probably the most important optical filter you can use is a polarizer. This can cut a lot of excess scattered/polarized light and reduce excess contrast, increase sky colour saturation, etc. It's effects are extremely difficult or impossible to get in editing.

Sep 06, 2005 | Panasonic Lumix DMC-FZ10 Digital Camera

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