Ricoh GR built-in ND filter combined with external B+W 64x

[Anio]

Hello,

I'm thinking to buy 6 f-stop 64x ND B+W filter for some landscape pictures as I find the built-in 2 f-stop ND filter not enough.
Do you think I can combine both of them without much loss of IQ in order to achieve 8 f-stop ?
Have someboly played with screw-in ND filters on Ricoh GR?
I'm asking because B+W filter(s) is(are) quite an investment for me.

Thank you

 

[mfogiel]

Make sure first that you can actually make long exposures. In theory, if your tripod is rock solid and it is not hot outside, keeping the optimum f stop with ND filter on should not degrade the image more than any clear piece of glass would.

 

[taemo]

definitely do-able, I've used the GR with built-in ND filter and B+W 10-stop with great success

R0030425 by earl.dieta, on Flickr

thing to consider, are you looking to use ND at 28mm or with the 21mm converter as there's a price difference between 49mm and 67mm ND filters.
Also, look into the Hoya Pro ND filters, IMO just as good as B+W

 

[Anio]

definitely do-able, I've used the GR with built-in ND filter and B+W 10-stop with great success



thing to consider, are you looking to use ND at 28mm or with the 21mm converter as there's a price difference between 49mm and 67mm ND filters.
Also, look into the Hoya Pro ND filters, IMO just as good as B+W

Amazing photo and many great pictures into your Flicr account!

Unfortunately right now the 21 mm converter is above my budget and I will use the 28mm.
As I saw in your Flickr, all of your pictures with B+W 10-stop are with the 21mm. Is there reason for that and do you think 28mm is good focal length for using with B+W 10-stop?

 

[taemo]

the 10 stop filter wont show any difference between 28mm or 21mm, just focal length preference.
l like my landscape shots wide but honestly 28mm is a great starting focal length.

these shots were taken with X100s + 28mm converter
DSCF2357 by e.dieta, on Flickr
DSCF2224 by earl.dieta, on Flickr