What to do if camera shows the following message "Lens not attached"

This is a fully manual lens with no electric contacts. When mounted, your camera will not detect the lens. You need to set your camera to Manual "M" mode.

How to make the shutter button work when the lens is attached?

You may switch your camera to M mode or you may turn off the shutter lock option in the menu to make it work.

How to keep the subject in focus?

You need to rotate the focus ring on the front body of the lens until the subject is in focus. You also need to focus with live view to achieve accurate focus. It is recommended to use a tripod and remote for stability when taking photos.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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High-Power 420-800mm f/8.3 HD Manual Telephoto Lens for Nikon D500, D600, D610, D700, D750, D800, D800e, D810, D810a, D850, D3400, D5000, D5100, D5200, D5300, D5500, D5600, D7100, D7200, D7500 DSLR

Product ID: 21676491

Details

Brand
Big Mike's
Camera Lens Description
800 month
Compatible Mountings
Nikon F
Focal Length Description
420-1600
Lens Type
Telephoto

🎯420-800mm ultra-telephoto reach

🔧Precision manual focus control

🖤HD multi-coating for crisp clarity

196623CFA

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎥 Own the distance, own the moment.

MASTER YOUR FOCUS - 100% manual focus lets you control every shot with precision—because true creatives don’t settle for autofocus shortcuts.
BUILT FOR THE BOLD - Robust build with a sleek black finish that stands out in any professional kit—because your gear should look as sharp as your shots.
SEAMLESS NIKON FIT - Designed exclusively for Nikon F-mount DSLRs, ensuring perfect compatibility and optimal image quality.
ZOOM INTO THE ACTION - Massive 420-800mm focal range captures distant subjects with razor-sharp detail, perfect for wildlife and sports pros.
CRYSTAL CLEAR IMAGERY - Advanced HD lens coating reduces glare and ghosting, delivering vibrant, high-contrast photos every time.

This High-Power 420-800mm f/8.3 HD Manual Telephoto Lens is a Nikon F-mount compatible zoom lens designed for DSLR users who demand extreme telephoto reach and precise manual focus control. Featuring HD multi-coating for enhanced image clarity and a robust build, it’s ideal for capturing distant wildlife, sports, and nature shots with professional-grade sharpness. Note: autofocus is not supported, emphasizing hands-on creative control.

Specifications

ASIN	B017JFFP80
Best Sellers Rank	#459 in SLR Camera Lenses
Brand	Big Mike's
Built-In Media	LYSB017JFFP80-ELECTRNCS
Camera Lens	800 month
Color	Black
Compatible Camera Models	Nikon
Compatible Camera Mount	Nikon F
Customer Reviews	3.5 3.5 out of 5 stars (207)
Exposure Control Type	Manual
Focal Length Description	420-1600 millimeters
Focus Type	Manual Focus
Image stabilization	digital,optical
Lens	Telephoto
Lens Coating Description	HD Coating
Lens Design	Zoom
Lens Fixed Focal Length	80 centimeters
Lens Mount	T Mount
Light Sensitivity	Wide ISO range
Manufacturer	Big Mike's
Manufacturer Part Number	BMSLY420NKK2
Maximum Aperture	8.3 f_stop
Maximum Focal Length	160 centimeters
Media Type	ProductImage
Minimum Aperture	8 f_stop
Minimum Focal Length	42 centimeters
Model Name	LYSB017JFFP80-ELECTRNCS
Model Number	BM-SLY420NK-K2
Number of Items	1
Photo Filter Size	6.2 centimeters
Real Angle Of View	1.04 degrees
Screen Size	11.85 inches
UPC	639713351781
Unit Count	1 Count
Warranty Description	1 year warranty
Water Resistance Level	Not Water Resistant
Zoom Ratio	3.81

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The product quality is outstanding. Exactly what I needed for my work.

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