PHOTOGRAPHERS: Post your photos !

**Jun aka Pekto** · July 5th, 2016 10:54 AM

My eldest kid wanted to practice her parallel parking. So, we drove around town. Man. This place is dead. Everyone is on holiday mode......except the cops. They're out in force.

**Jun aka Pekto** · July 5th, 2016 10:59 PM

I found a copy of the original untrimmed Meteor Crater panorama I stitched together. I thought I deleted it when I was cleaning out hard drives. I'm fascinated by asteroid impact craters. It's not that old. The impact occurred only 50,000 years ago.

**Jun aka Pekto** · July 10th, 2016 10:43 AM

I was bored. So, I tested the iPad Mini 2's camera indoors.

Mall Choo Choo: free ride to the Food Court.

**Jun aka Pekto** · July 12th, 2016 12:38 PM

I've had my old canon DSLR for over six years now and I still don't know what Tv setting is. Seems to be okay.

**dr. d** · July 12th, 2016 07:15 PM

in some older photo systems, if one takes a picture of an older, CRT monitor, a horizontal bar would appear in the final image.
the "TV" setting allows that bar to disappear.

**Jun aka Pekto** · July 12th, 2016 11:07 PM

Originally Posted by dr. d

in some older photo systems, if one takes a picture of an older, CRT monitor, a horizontal bar would appear in the final image.
the "TV" setting allows that bar to disappear.

I took a number of shots using the Tv setting. No horizontal bar although the Toshiba CRT TV only dates back from 2003. It's not that old as far as CRT TVs go.

Perhaps, the horizontal bar only occurs with older CRT TVs.

**jut703** · July 13th, 2016 01:00 AM

Originally Posted by dr. d

in some older photo systems, if one takes a picture of an older, CRT monitor, a horizontal bar would appear in the final image.
the "TV" setting allows that bar to disappear.

Not sure if joke...

Originally Posted by Jun aka Pekto

I've had my old canon DSLR for over six years now and I still don't know what Tv setting is. Seems to be okay.

Tv stands for shutter speed priority (T as in time value for Canon, Nikon uses S). This allows you to manually set what shutter speed you want, while the camera automatically selects the correct aperture setting for a proper exposure.

Av stands for aperture priority (Av for Canon, A for Nikon) and allows you to set your aperture while the camera automatically selects the shutter speed for a correct exposure.

In comparison, Manual mode (M for both Canon and Nikon) requires you to set both aperture and shutter speed. If you get the combination wrong, you'll have images that are too bright (overexposed) or too dark (underexposed).

To help you understand the exposure triangle better:

Sent from my SM-N910C using Tapatalk

**dr. d** · July 13th, 2016 01:23 AM

Originally Posted by jut703

Not sure if joke...

Tv stands for shutter speed priority (T as in time value for Canon, Nikon uses S). This allows you to manually set what shutter speed you want, while the camera automatically selects the correct aperture setting for a proper exposure.

Av stands for aperture priority (Av for Canon, A for Nikon) and allows you to set your aperture while the camera automatically selects the shutter speed for a correct exposure.

In comparison, Manual mode (M for both Canon and Nikon) requires you to set both aperture and shutter speed. If you get the combination wrong, you'll have images that are too bright (overexposed) or too dark (underexposed).

To help you understand the exposure triangle better:

Sent from my SM-N910C using Tapatalk

yes, it was a joke... of sorts.
but jut saw thru it.
when we were still using film to shoot CRT images, that bright horizontal bar on the CRT was always there, whenever we allowed the camera to make the settings automatically. what we did, was to set a long exposure time of, say, one to several seconds, and set the aperture manually or let the camera decide (the so-called Tv mode for canon, a.k.a. Shutter priority for nikon). the long-ish exposure time got rid of that bright horizontal bar. we eventually learned to use all manual mode for the camera, and did not rely on its cpu anymore.
in those days, film was expensive, and we had to let each frame count. unlike today... take as many shots as you can, edit them later, and erase what you don't like... all at no additional expense.

**Jun aka Pekto** · July 13th, 2016 02:09 AM

Originally Posted by dr. d

yes, it was a joke... of sorts.
but jut saw thru it.
when we were still using film to shoot CRT images, that bright horizontal bar on the CRT was always there, whenever we allowed the camera to make the settings automatically. what we did, was to set a long exposure time of, say, one to several seconds, and set the aperture manually or let the camera decide (the so-called Tv mode for canon, a.k.a. Shutter priority for nikon). the long-ish exposure time got rid of that bright horizontal bar. we eventually learned to use all manual mode for the camera, and did not rely on its cpu anymore.
in those days, film was expensive, and we had to let each frame count. unlike today... take as many shots as you can, edit them later, and erase what you don't like... all at no additional expense.

I think Tv mode works for me. I can understand and adjust shutter speed and ISO settings better than aperture settings.

**remzam** · July 13th, 2016 06:06 AM

The reason why you see a horizontal line/bar when shooting old television sets with CRT is because CRTs display images at a lower frequency, usually 1/20th of a second or slower. That means it displays an image or a frame at about every 1/20th of a second or 3 frames per second, or slower.

If you use a speed setting higher than that, the camera won't be able to sync with the refresh rate of a CRT thus producing that bar/line.

Newer TV sets with LCD or LED has higher refresh rates thus you can use higher speed settings on your camera without the bar/line.

This effect is similar when you use flash automatically while simultaneously using a speed setting higher than 1/200 or 1/250th of a second. Instead of a horizontal white bar/line, you will now see a black bar on your image. This is because the default flash refresh rate (threshold) is about 1/200 or 1/250th of a second (depends on the camera or flash model)

More advanced flash systems will let you use a higher speed, let say to freeze a drop of water or a bullet, without having that black bar/line by increasing the refresh rate of the light. You can even do strobe lighting, with bursts of light within a second.

A bit technical but hope to help. When doing photography, just think of literally "writing with light"

Sent from my iPhone using Tapatalk