Black Glass Photography

[alucard_x]

mga master, unsa nindut nga pang entry level lang na cpl?

There is no entry level na cpl as far as I remember...its just your putting another glass on-top of your lens.. so if you buy a cheap CPL or UV filter that makes your lens cheap as well. Just buy good quality filter that you can afford.

[wonsters]

Metering is irrelevant because most of the time you will be in Manual mode to set the exposure. You must have an understanding of exposure to get the right shutter speed.

ex. if the scene your taking is F11 @ 1/2000 now you want your shutter speed to go 1 second to get a blurry motion. So Just count how many stops from 1/2000 to 1s... then adjust the BG.

Tnx alucard. So, from 1/2000s to 1" that wud be 11 stops right? so i just need an 11 stops BG to get same exposure? sakto ba?

[alucard_x]

Tnx alucard. So, from 1/2000s to 1" that wud be 11 stops right? so i just need an 11 stops BG to get same exposure? sakto ba?

Correct!!! That's basically the concept on how exposure works. Your aim is reduce the amount of light coming into the sensor...its either you adjust the exposure or add filters.

[ishmark]

I was reading Scott Kelby's new book, The Digital Photography Book 4 and found something interesting about BG filters. How long should your shutter speed be... the book mentioned a link of a pdf file of a table on how many seconds should you use.

here's the link: Alex Wise Photography

it is basically what alucard_x mentioned about counting the stops, think of this as a cheat sheet.

how to use it...

the cells that are colored yellow on top are the shutter speed reading at your desire aperture without the nd filter.
the rows on the left are the stops of the filter
the data to the right is ang seconds you need when attaching the filter.

hope this helps..

oh also the book mentioned, if your using an iphone, you can install LongTime Exposure Calculator app from App Store. its free

[wonsters]

"So, who wants to be first to try a 1 year exposure?" hehehehe

[ishmark]

"So, who wants to be first to try a 1 year exposure?" hehehehe

hahaha, na shock gani ko pag kita nako ani. grabe sad nang 1yr exposure

[nowayL]

Saksto gyud ni tanan inyong discussions guys ... hehe

[wonsters]

^kng brand new imong camera gigamit ana ky after 1 year ang actuation ky 1 count ra heheheh

[michaelocana]

f-stops / shutter speed(without BG filter) = estimate shutter speed with BG Filter.... start from that
custom WB (kelvin)

enjoy!!!

Boss mike ako lng klarohon ha kng sakto ba akong pagsabot. Bale, set nko ang f-stops & shutter speed w/o the BG then attach the BG filter nya adjust the shutter speed depending kng pila ka stops ang BG, if 10 stops filter so lower ko ug 10 stops sa shutter speed? sakto ba?

thats the recipe....

------------

Ten stops is 2^10 less light since each stop halves the light. 2^10 = 1024, which is close enough to 1000, unless you want to get really super technical.

So if your normal exposure without the filter would f4 @ 1/500, you'd need to increase the shutter speed by multiplying it by 1000. Since we're usually talking about fractions of a second you can just divide 1000 by the denominator of the unadjusted shutter speed.
Ex: (1/500) * 1000 = 1000/500 = 10/5 = 2

So you'd end up with a 2 second exposure at f4.

amen?... try daun hehehe epektib na.... dghan ko g todloan ana sa intimate landscape2

[nowayL]

Inigtan-aw sa monitor Master dili makontento sa 2 secs, pagamyan nasad ang aperture para kaabot ug 15 secs ... hehe