ND filters.

[Johnny7000]

Currently i have two lenses for my D7000, a Nikkor 18/105 and a Nikkor 70/300.
I am looking to buy a neutral density filter(s) to take some photos of moving water. When i looked them up they come in ranges of 52mm to 77mm.
Can someone tell me what the mm in the advert refers to please or what i would need for the lenses i have please?
Thanks.

 

[Yellowbelly]

I assume you are referring to circular screw in filters. In which case the measurement refers to the thread size of your lens. The 18-105 has a 67mm thread whilst the 70-300 has a 62mm thread.

(And this info is from a Canon man!!)

 

[Johnny7000]

I assume you are referring to circular screw in filters. In which case the measurement refers to the thread size of your lens. The 18-105 has a 67mm thread whilst the 70-300 has a 62mm thread.

(And this info is from a Canon man!!)

Thankyou, much appreciated.

 

[Martyn D]

If you have different size lenses you could go down the square filter route, then you would have a filter holder and filters and would just need a different size ring adapter (that attaches the holder to the camera) for each lens

 

[Johnny7000]

If you have different size lenses you could go down the square filter route, then you would have a filter holder and filters and would just need a different size ring adapter (that attaches the holder to the camera) for each lens

Thanks Martin.

 

[wessyfiesta]

Start with a nd4 screw in filter for slow shutters, you can pick them up pretty cheap (imitation) or pay the full wack for the real thing, i have a rimmer nd4 works very well at f16 for milky water.

 

[HoppyUK]

Start with a nd4 screw in filter for slow shutters, you can pick them up pretty cheap (imitation) or pay the full wack for the real thing, i have a rimmer nd4 works very well at f16 for milky water.

ND4 is only two stops of neutral density and won't make a significant difference when you need long exposures in daylight. Using f/16 is never ideal, unless you need it for depth of field. Diffraction reduces sharpness quite noticeably at higher f/numbers (regardless of lens quality) and for optimum sharpness on a crop format camera it's better to keep below f/8 or f/11 tops.