Wednesday, September 27, 2006

Experimentations with the exposure triangle


Canon 400D 54mm 1/4 F11 ISO 800 <- I've always wanted to write something like this (;p)

To learn about the exposure triangle read here at digital-photography-school.com.

I'm starting to really see how a DSLR edges out on a point and shoot. This shot could not have been done with my previous Sony. The only light source is the lamp you see in the picture, this photo was just an experiment of several things:
1. metering
2. choosing an aperture for maximum depth of field
3. compensating the exposure with the appropriate shutter speed
4. compensating with ISO.

I'm quite impressed that at such a high ISO of 800 the picture is acceptably not grainy.

ps
1. In retrospect I should have illuminated the flowers from the front.
2. This is actually a significant step for me, as I am stepping more and more outside of the automatic functions to more manual controls...
3... and the epiphany about understanding the exposure triangle came to me only this morning, while driving to work :)

10 comments:

alynnsaripuddin said...

haha always wanted to write those EXIF readings ya? :D
a very homely shot, really like it.
congrats on getting your 400d ;) we'll have to think of the name soon hehe. Yume wants tomodachi.
the entry before this, really really like #1 and #3. well done, keep experimenting :D gambarou!

Ikelah said...

You can just bounce the light from the source by using reflectors. cheap reflectors such as white polysterine board or even pms white silk nightee will do.

As for the ISO sensitivity, it depends of hte CCD and the program installed.

As for canan such as your 400d, 350xt they start as low as ISO 100 whereas For Nikon such as d50, d70 start at ISO 200.

When talking about noise related to ISO, varies from camera to camera. Therefore it is important to read the manual. In Nikon is a noise reduction mode to reduce noise especially at low light with long exposure.

Nice sepia.

anne said...

i know zilch abt photography (tht explains my absence in ur comment box lately!) but i juz wanna tell u tht those pics still looks great to me (to my untrained myopic eyes at least!) eps tht pic of mama sarah. Puas dpt tatap wajahnya.. :)

ajab booboo said...

Uncle Mynn, at least you're experimenting with your camera. My Daddy lazy, you know. At most, he would fiddle with a button here, a knob there, and shoot. That's it.

But I think I should tell him to get this 400dee camera thingy. More expensive so he'll have no reason not to experiment. Hehe!! :D

mynn said...

ajab booboo :)
do i sense a future addition to the canon club membership? i hope so! do keep us updated if you decide to upgrade yr camera

anne
kosong-kosong lah anne, i was befuddled as well visiting your blog since the current hot topic over there is breast feeding:) I dunno why i keep posting technical stuff on my blog when i know there's limited readership ... sigh:)

ikelah
as always, many thanks for your technical tips - exactly what i need. when you said about reflectors i went "betul jugak!" this morning... probably for future experiments.

alynn
hehe, thanks - and thanks for leaving a comment. any tips, links to other pages would be well appreciated by yours truly. still experimentation stage lah alynn. i just figured out how to take pictures manually (rather than auto) ONLY yesterday tau. LOL - i HAVE always wanted to write EXIF data (ooo rupa2nya the name of it is "EXIF data", didnt know that before)

~~
thanks all

ps
ajab - the world of DSLRs is full of experimentations, it's like being in physics class again! infact some books even have mathematical calculations for e.g. depth of field, appropriate speed etc.

moby said...

Did someone mention the M-word (math)?? Arrrghhhh!!!

anne said...

mynn, who say's i'm reading ur stuff? i'm here juz for the pictures, thankyouverymuch! LOL *kidding!*

moby, MATH MATH MATH! who's shaking in his boots now???

Paul Moss said...

A good example of the beginners photograph. You can`t help trying to include everything inside the frame and in the end the strength of the subject is gone.
The rule : 1. Decide on the subject. In this case I think it`s the flower.
2. Take out any other objects which will shift viewers focus from the subject. Only objects or shapes which can increase focus on the subject should be included.
3. Enhance it with combination of light using reflectors or soft boxes if you have one or if you care to create one.
4. Use a tripod so that you can change the light arrangements without repositioning your camera and study the difference.

In your case, focus is shifted to the sofa which is red, I ask what`s that pillar doing there and the flower is embedded into the wall which is of the same tone and I ask probably the lamp is the subject?

mynn said...

paul moss
alamak, i must have missed your comment. many thanks for visiting my humble blog & thanks for the lesson:D

mynn said...

whoops others have commented as well:

anne
hehehe, you know what anne, this blog was DESIGNED to have lots of pictures and less text, so that if you're busy (like me, sometimes) you could just skim through the blog by looking at the pictures and get a general idea of the going ons.

Moby
you better believe it my friend - there are some MATHEMATICAL calculations in photography. not much though, you may be relieved to hear:D