What’s Your Preference?

Trader · #**131** (**permalink**) 09-23-2009, 07:09 PM

Quote:

Originally Posted by lenschweitzer

I'd like to know how to spot meter for HDR, or more specifically, how do I meter the first exposure from which subsequent ones will be based.

I meter my shot exactly the way I always do. I then change the shutter speed. I do not change the aperature because if you do that, it will change your depth of field and your images will not look the same. I usually go 2 stops up and 2 stops back, then depending on the amount of light I am working with I'll take another shot or two to over compensate for the light. i.e. if it is a bright shot, I'll get an extra shot stopped down another 2 stops.

spencer28n · #**132** (**permalink**) 09-24-2009, 01:36 AM

I want to see a tutorial for cleaning your dslr.

equilution · #**133** (**permalink**) 09-26-2009, 09:42 PM

I've got a Nikon D3 and would like to break from shooting in JPEG all the time. Is there a thread for how to start shooting in raw, and what the benefits are? Thanks.

Jim

kencaleno · #**134** (**permalink**) 09-27-2009, 06:00 AM

Quote:

Originally Posted by scarletvirago

I'm a little late to this forum, but if you're still taking a peek at it, I'd love a tutorial about how to use my new speedlite. I know "how" in the technical sense (I read the manual), but what can it DO, in beginner's parlance? I don't have any off-shoe equipment yet, so I'm talking real basics here: bounce light, fill flash, etc.

Thank you!

Flash basics

On-camera flash, (forget the built-in flash) using a hot-shoe-mounted flashgun, directed straight at the subject is very flat lighting, possibly the very worst of all. There are ways that we can modify the on-camera flash to control our lighting. We can diffuse the flash by means of clip-on plastic domes, (think non-coloured Tupperware-type pots that will fit over flash head),or we can bounce our flash from ceilings, walls, off of reflectors, etc.,.
Balancing the light between existing light and flash is quite simple- Just remember that Shutter-speed controls existing light and Aperture controls the flash effect. You set your camera’s mode to Av (aperture priority) selecting aperture to desired depth of field. (ie: for weddings F8 does the job) Get a reading from subject. Take note of these settings. Now select M (manual) mode and use the settings you got from Av mode. Fit your flash to hot shoe, use manual flash. Try first maximum sync speed (usually 1/250 sec or 1/500 sec), then come down from here just adjusting shutter speed, and checking on monitor, until ambient light looks right. As for power setting, I like to start at ¼ power, then I can go down two stops to 1/8 and 1/16 power, and up to ½ and full power. (My flashguns only span from full to 1/16 power) For interior shots use the same method: If ambient light reads 1/125 @ F4, you will need to set aperture to F4, and set shutter speed at 1/500(if this is your camera’s maximum sync speed, or 1/250 @ F5.6 if that is your maximum sync speed, and bounce off ceiling. Adjust power of flash until it looks right in the monitor. This gives a ratio of 3:1 as a basic starting point. A big advantage, especially when photographing people, is to have the flash off-camera, so wherever you wander to get different angles, your lighting with remain constant. If flash is on camera, you would need to make adjustments each time you move out of the pre-set range of focus. Your flash can be triggered by radio transceivers (Pocket-wizards) or by means of pc cables. For wraparound, or cross- lighting, you could place your subject between the sun and your off -camera flash, using the sun as fill and your flash as the main, or key, light
Ideally, indoor images should not show that flash was used, so for this to take place, modification is required. I use a black computer mouse-mat, which forms a half snoot and is rubber banded to the underside of my flashgun when bouncing off of ceilings etc., this ensures no direct light lands on the subject. You can choose of course, to use automatic mode for flash-or TTL, (Through The Lens) I just prefer the manual mode.

Problems occur when using flash under fluorescent illumination, where you will get a severe green cast over your images-Solution is to use a gel (Window green) over the flash window, and a magenta filter( FL-D) over the lens. These filters will lose you one stop of light, but the lens filter alone will do the trick, if you aren’t using flash. Why this works is green over the flash window equalizes foreground and background color temperature, and the magenta on the lens absorbs the green from both sources to neutralize the image.
Most cameras will let you select front or rear curtain flash set-ups, (Front curtain flash fires as soon as the shutter opens, while Rear (or second) curtain flash fires just before shutter closes) and for most types of photography Front curtain will do the job, If the subject is on the move however, Rear, (Second) curtain flash is the way to go, the reason being that if you were to use front curtain flash on a moving subject, the movement defining blur, especially against a black, or at least a dark background, would appear in front, and not behind the subject, giving the impression that the subject is going backwards. On the other hand, if you were to use rear-(second) curtain flash for say a portrait, and you are trying to capture a certain mannerism, you would not want the flash to fire too late and miss the emotion.

If you shoot at a party or wedding reception, indoors at night using the auto or programme flash setting, which is usually either 1/250 or 1/500 second, you will end up with ultra black backgrounds, and not the scene you saw. That is because the flash fired too fast to record background detail. Solution: set camera to shutter priority or manual mode, and adjust speed to between 1/30 and 1/8 second-these are normal settings for fairly dark conditions, because of the actual flash speed,. blur won’t be a problem. This is Known as “Dragging the shutter”.
When using Dragging method keep flash set to auto or ttl, as, unless you are comfortable with doing this , you could complicate matters. If you only have a point and shoot camera, use the night setting-the camera will automatically set shutter speed to allow background detail to be captured, BUT, you will need a tripod/monopod etc, as for night mode shutter speeds are likely to be a lot slower than 1/8second.
Flash doesn’t reach as far as you like? Up the ISO! -“Twice the distance, four times the speed”. For instance: If your flash has a Guide number (GN) of 25(metres (80 ft), the best you can expect is a realistic distance reach of 20 metres (60 feet) at Iso 100,so at Iso 400 you will get a realistic reach of 120 feet (40 metres),and at 1600 Iso, a reach of 240 feet (theoretically),but noise will play its part at high Iso’s.

If you are using an automatic flashgun, that does not give you fill-in values, Meter the scene, select an f-stop for the DOF you want, set auto flashgun ISO to double camera ISO and take your shot, this will give a 2:1 ratio-your fill will be 1 stop darker that the main subject. If you double the ISO again, fill will be two stops darker.

Regards, Ken

amymnc · #**135** (**permalink**) 09-30-2009, 03:29 AM

Would love to see a post processing tutorial with just one photo. Take a SOOC shot, turn it into a magnificent work of art and tell us every step along the way.

Can't believe I said that outloud.

kencaleno · #**136** (**permalink**) 09-30-2009, 06:28 AM

Quote:

Originally Posted by amymnc

Would love to see a post processing tutorial with just one photo. Take a SOOC shot, turn it into a magnificent work of art and tell us every step along the way.

Can't believe I said that outloud.

Okay, here's from a crappy,straight-out-of-camera,underexposed flower shot, to a fine art Calla lily image (Not exactly a work of art, but you can see the difference!)

Step one: Load into photoshop

Step two: Tidy up:

-Image>Adjustments>Auto levels
-Ctrl+J
-Image>ADjustments>Equalize
-Blending mode- Soft light-adjust opacity slider to suit (32% in this case)
-Flatten

Step three: Boost colors

-ctrl+J
-Image>Adjustments>match color:
Luminance....................................119

Color Intensity...............................126

Flatten

Step Four: To Isolate over Black:

-a) Zoom in 200-300%.
-b) Use the pen selection tool to chart an exact path around the object.
Get it perfect.
-c) Click on working path Icon in paths palette
-d) Select> Modify> Contract by 2 pixels.
-e) Select> modify> Smooth by 3-5 pixels.
-f) Select> Inverse-.
-g) Select> Feather by 0.2 - 0.5 pixels.
-h) Make sure foreground white/background black - Press Delete.
You now have isolated object on black background.

Step Five: To sharpen (if needed)

-Ctrl+J
-Filter>other>high pass 4 pixels
-Blending mode-soft light
-Flatten
-Save

Regards, Ken

kencaleno · #**137** (**permalink**) 09-30-2009, 06:58 AM

Here's a simpler one:

Tidy up

1. Image> adjustments> Auto levels

2. Ctrl+J

3. Image> adjustments > Equalize

3. Blend mode-Soft light- (adjust opacity slider to suit)

4. Flatten

Colour Boost

1. Ctrl+J

2. Image> Adjustments> Match Color

3. Luminance 119

4. Color intensity 126

5. Flatten/Save

#**138** (**permalink**) 09-30-2009, 02:01 PM

Quote:

Originally Posted by equilution

I've got a Nikon D3 and would like to break from shooting in JPEG all the time. Is there a thread for how to start shooting in raw, and what the benefits are? Thanks.

Jim

That.... is... just... not.... fair.