Star Focus Filter - New Release
Regular price
$49.00
Sale price$39.00
- Free worldwide shipping above $39
- In stock, ready to ship
HANDLE TIME
All orders will be scheduled for shipment in 1 to 3 business days, excluding holidays.
COUNTRIES
We ship worldwide.
WAREHOUSES
Currently, we have 4 warehouses.
🇺🇸 US warehouse, for our US users, parcel usually arrives in 1-7 days.
🇪🇺 EU warehouse, for most EU countries, parcel usually arrives in 1-7 days.
🇦🇺 AU warehouse, for our Australia and New Zealand users, parcel usually arrives around 1-7 days.
🇨🇳 CN warehouse, for all countries, parcel arrives in 4-7 or 8-20 days, please check below for details.
Pre-order
The first batch will be ready around 21st June, then the orders will be processed for shipping from the CN warehouse.
Move Shoot Move Team
16th June 2022
Introduction
Star Focus Filter is used to work with cameras to achieve precise focus on the stars,
Focusing a camera lens in the dark is always a difficult thing in astrophotography. Through the Bahtinov Mask on the filter, Star Focus Filter can help the camera get an accurate focus on stars.
How to Use Star Focus Filter
Method 1
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Mount the Star Focus Filter onto your camera.
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Turn on the live view mode, adjust the ISO to the biggest (ISO 1600 or above), snd set the shutter speed to be 10s or more.
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Adjust the frame and make sure the bright star or light source is in the middle of the frame. It is recommended that you look for a bright star of magnitude 1 to focus on.
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Magnify the frame and adjust focusing rings at the same time until three fine spike lines show out in the frame.
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Rotate the focusing ring to make the three spikes intersect at one point. This the when precise focus is achieved.
Method 2
If you can't find a brighter star or the lens aperture is too small, you can take several testing pictures to get the focus.
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Mount the Star Focus Filter onto your camera.
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Adjust the focus rings lens to get an infinity focus
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Set the high ISO and short exposure (several seconds), and take one testing shot
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Check the three spike lines in the frame, if the central spike is closing to the left, screw the focus ring to the right. If the central spike is closing to the right, screw the focus ring to the left.
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Take a second testing shot, and repeat step 4 until three spikes intersect at one point. Then a precise focus is achieved.
Note: Hand holding the filter, then it can work with the lens without the adapter
Tips:
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It will need to position the bright star in the middle of the frame, choosing the bright star of magnitude 1 or close to the magnitude 1
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For the wide lenses, please turn the aperture to the biggest
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The filter is not wear-resistant, please store it in a filter case after use. If there is dust or oil, please use an air blower and neutral detergent to remove them
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Do not place it in high temperature environment
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Recommended Apertures with different focal lengths
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Focal Length (MM)
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10-11
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12
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14
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16
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18
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20
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24
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28-600 or longer
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Aperture (F)
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1.2-2.5
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1.2-2.8
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1.2-3.5
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1.2-4.0
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1.2-4.5
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1.2-5.0
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1.2-5.6
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1.2-5.6 or lower
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Specification
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Compatible lens
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82mm
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Camera Adapter Rings
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49mm、52mm、58mm、62mm、67mm、72mm、77mm
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Weight（g）
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without adapter ring 20g
with adapter ring 30.3g
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Note: Star Focus Filter can work with other lenses with the help of camera adapter rings
