B+W #300 30mm Push-On Lens Cap

B+W #300 30mm Push-On Lens Cap

B+W #300 30mm Push-On Lens Cap

B&H # BWLC30 MFR # 65-069690
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  • 1Description

The B+W Push-On Lens Cap #300 model is their 'standard' unit, and has a slightly convex front surface to prevent the inside of the cap from touching the glass of your lens when it is tucked away in a bag.  The sides are their 'standard' depth, to fit on normal lens barrels or standard-style filters, and this particular unit has a 30mm inner diameter.

B+W also makes a 'shallow' sides model, the #305 model, to fit on slim filters, and a more common snap-on cap.

It isn't an exact science due to all the variables involved, but generally a push-on cap that is 2-3mm larger than the lens' filter size fits just right.

Table of Contents
  • 1Description
Type Front
Size 30 mm
Attachment Method Slip-On
Material Not Specified by Manufacturer
Packaging Info
Package Weight 0.3 lb
Box Dimensions (LxWxH) 7.3 x 3.5 x 0.1"
#300 30mm Push-On Lens Cap is rated 3.8 out of 5 by 4.
Rated 2 out of 5 by from Look out for size of lens cap vs. filter I ordered this B+W #300 30mm Push-on Lens Cap for my B+W 30mm UV HMC Filter (both the same brand). It turns out that the lens cap was about 2mm too small. I measured the inside diameter of the 30mm lens cap and it is about 29.5mm. I measured the 30mm filter with a caliper and its outside diameter is 32mm (though the thread is 30mm). How odd! Now I have to order another cap, the 32mm, and see if it fits and if it gets here on time for the job.
Date published: 2012-11-06
Rated 3 out of 5 by from Works, but not cheap for what it is I needed this lens cap for an unusual C-mount filter holder that had a diameter of 30 mm. It fit very nicely and does a good job of protecting my filter. The price seemed a bit steep since it is just a thin plastic cap. I guess it is hard to sell anything for less than a couple of dollars via the web - it will be interesting to see if it lasts a while.
Date published: 2013-05-31
Rated 5 out of 5 by from Lens cap for Sanyo Xacti I looked high and low for a replacement cap for a VPC-GH2 - no luck. Then I found what I was looking for at the B & H site. This lens cap fits the Xacti exactly!
Date published: 2013-08-11
Rated 5 out of 5 by from Works fine. I am using this for an auxiliary lens for an IR camera. Fits fine.
Date published: 2017-10-15
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