Set The Gain And Let The Aperture Discussions

Enhanced coatings = "extra aperture"?

I have a 10" primary with 96% coatings, and a secondary with 96% coatings. Compared with the same set with standard coatings of 88%-90%...am I gaining "extra aperture" and if so...how much?

Started by tcmzodiac on Friday, February 03, 2012, 20 posts by 10 people.

Answer Snippets (Read the full thread at cloudynights):

Mike, you are very kind to run those calcs for this...mathematically challenged...ATM! So, let me get this straight....

Mike...what does the added 19% brightness translate into aperture, ie, am I getting the same power aperture D1 = 12.0".

Stops, Shutter Speed, Aperture, ISO Sensitivity

In photography, think of the light as rain (a shower of photons). We are interested in the amount of rain we collect (the exposure). This water volume (exposure) depends on the rate or intensity at which the rain falls (the light level), the size of our...

Started by dosdan on Friday, November 18, 2011, 4 posts by 1 people.

Answer Snippets (Read the full thread at pentaxforums):

This is a stops-based numeric system, better thought of as meaning "Sensitivity... .

For different film speeds, and you could then set a "LV" dial on the camera which used the right shutter speed and aperture combination for a correct exposure.

Aperture priority vs Auto (or Program) mode

Aperture priority vs Auto (or Program) mode Hello, I recently purchased a Pentax k-x camera as an upgrade over a Canon PowerShot G9. The majority of my pictures are nature and landscape. One thing I wondered about is that most pictures I see on Flickr...

Started by xenocide on Tuesday, December 07, 2010, 10 posts by 8 people.

Answer Snippets (Read the full thread at thephotoforum):

In....

This is not really aperture and shutter according to the comparison it makes with a set of similar conditions to use exposure compensation.

They meter the scene and set the aperture and shutter to match the meter.

Ask your Facebook Friends

Photography Lesson 2 Aperture and Depth of Field

Photography Tutorial 2 Aperture and Depth of Field. So by now you should have a basic understanding of how the 3 elements, ISO, Shutter Speed and Aperture come together to give the correct exposure, you should also be aware of the effects of increasing...

Started by Harris on Tuesday, September 14, 2010, 10 posts by 3 people.

Answer Snippets (Read the full thread at falconryforum):

The window of opportunity to get a good shot be a compromise, Basically it will try to use the highest possible aperture for the given light and it usually.

To achieve a correct exposure with such a wide aperture.

Let's compare the Epson 5010, Sony HW30 and JVC RS45

(Updated 1/24/2012) It’s time for a projector upgrade. Ok, it’s past time for an upgrade. I’m looking into 3 projectors (in no specific order) 1) JVC RS45 2) Sony HW30 3) Epson 5010 I thought I’d share my observations regarding these 3 projectors. I wish...

Started by MadMyers on Tuesday, December 20, 2011, 30 posts by 18 people.

Answer Snippets (Read the full thread at avsforum):

The other things are important.

I know the answer but I will let others give their opinions first.

A "Beginner's" question about manual settings:

I've been shooting 35mm since the 1970's and have had a digital camera for ten years. I sort of understand the basics of how a camera operates but this is one of those situations where the more you learn, the less you understand. I recently purchased ...

Started by Jones0610 on Friday, January 27, 2012, 57 posts by 18 people.

Answer Snippets (Read the full thread at dpreview):

If I shoot in aperture priority mode the focus of your assignments....

If I shoot in aperture priority mode and then shoot teh same; Much appreciated! > > So let me ask you this.

Much appreciated! So let me ask you this.

Help setting up Raid 0 with two SSD's

Raid is all new to me but I would like to upgrade my velociraptors. I herd striping with two SSD'S is super fast. I currently have 3 velociraptors installed. Slot 1 is just for Apps (boot disk), Slot 2 are my files, Slot 3 is a backup of slot 2 (time ...

Started by clank72 on Friday, January 27, 2012, 11 posts by 6 people.

Answer Snippets (Read the full thread at macrumors):

Similar if not Lion (probably set" of data moves around ....

Similar if not Lion (probably already have drive and boot off USB to create RAID set up and start TM recovery.

And boot off USB to create RAID set up and start TM recovery.

Help me buy a DSLR set

Hello all, ok so Im VERY new to the world of cameras and photography ... so need some help. I am looking for a DSLR camera that I can take pics of my reef, and other scenery with. I also want a macro lens, to take pics of the polyps of my SPS, or legs...

Started by Allmost on Friday, February 03, 2012, 25 posts by 6 people.

Answer Snippets (Read the full thread at reefcentral):

I really like how the T2i fits in my hand that is, or that your DoF is determined by focal... .

Is and 55-250mm IS Lens a good macro lens ? what are your thoughts, so the macro is set now price for it seems fair too.

let me ask another way ...

What is it? Set 265

On Thu, 1 Jan 2009 05:08:21 -0500, "Rob H." <rhvp65@gmail.com Just posted the latest set: http://55tools.blogspot.com/ Rob

Started by Rob H. on Thursday, January 01, 2009, 20 posts by 16 people.

Answer Snippets (Read the full thread at omgili):

Upon a board or something, when the pointy bit can be sprung down to leave a pointy poke mark a set cannot keep to gain that which he cannot lose." -- Jim Elliot On Thu, 1 Jan 2009 06:57:51 -0500, "Alexander Thesoso" <alexander_thesoso....

K-01 - manual video?:

Hi, does anyone know if K-01 has full manual control over video? ISO/aperture/time. Pentax ... pretty please!! Make this camera finally RIGHT!! I might buy K-01 just for video if (and only if) it has a possibility to set exposure/aperture/ISO .. if not...

Started by Marbuel on Monday, February 06, 2012, 6 posts by 4 people.