topic Re: How can I set the camera to 1/125, F11, 100 ISO? in EOS DSLR & Mirrorless Cameras

How can I set the camera to 1/125, F11, 100 ISO?

Freddyfred69 — Fri, 19 Aug 2016 01:14:00 GMT

Hello,

Please someone tell me how can I set my Canon Rebel T5 at 1/125,F11 and 100 ISO?

I tried many thing with no succes... I can always change 2 settings but never a 3rd one.

Please help me!

Thank you in advance

Re: How can I set the camera to 1/125, F11, 100 ISO?

Waddizzle — Fri, 19 Aug 2016 01:22:50 GMT

If the mode dial were set to "M", then you should be able to set any of those three values to anything you want.

Re: How can I set the camera to 1/125, F11, 100 ISO?

Freddyfred69 — Fri, 19 Aug 2016 01:51:39 GMT

Thank you for your answer. Yes I can set this to 1/250 and 100 ISO but where is the button to switch to focal?

There is the 5 buttons ''ISO'', ''AF'', ''WB'', ''The timer button'' and ''set'' button.

The ''Q'' button also but I can not switch to adjust the focal...

Re: How can I set the camera to 1/125, F11, 100 ISO?

Freddyfred69 — Fri, 19 Aug 2016 01:55:47 GMT

I just found it!!

I had to press the ''AV'' button and at the same time turn de wheel and select ''F11''.

Tank you!

Re: How can I set the camera to 1/125, F11, 100 ISO?

ScottyP — Fri, 19 Aug 2016 03:04:38 GMT

BUT wait.

Why do you have an exact exposure setting in mind, without knowing how to input it to the camera? The proper exposure is what your situation is in a certain light at a certain time on a certain day, etc....

Re: How can I set the camera to 1/125, F11, 100 ISO?

Freddyfred69 — Fri, 19 Aug 2016 03:20:48 GMT

First. I wanted to know how to do all the strings myself instead of always use the preset fonctions of the camera. Second, the attics are to catch the full moon, they were recommended to me.

Regards,
Freddyfred

Re: How can I set the camera to 1/125, F11, 100 ISO?

ScottyP — Fri, 19 Aug 2016 03:28:16 GMT

It's rare that Manual is the best setting unless you are in a photo studio.

Use Tv when a fast shutter is important. Use AV when depth of field is the most important thing.

Re: How can I set the camera to 1/125, F11, 100 ISO?

Waddizzle — Fri, 19 Aug 2016 08:26:22 GMT

@ScottyP wrote:
It's rare that Manual is the best setting unless you are in a photo studio.

Use Tv when a fast shutter is important. Use AV when depth of field is the most important thing.

Manual is ther best setting for astrophotography, including the Moon. Most cameras will almost always not meter the exposure of the Moon properly. The camera tends to way over expose the Moon. Ditto for starscapes.

Re: How can I set the camera to 1/125, F11, 100 ISO?

ScottyP — Fri, 19 Aug 2016 11:33:24 GMT

@Waddizzle wrote:
@ScottyP wrote:
It's rare that Manual is the best setting unless you are in a photo studio.

Use Tv when a fast shutter is important. Use AV when depth of field is the most important thing.

Manual is ther best setting for astrophotography, including the Moon. Most cameras will almost always not meter the exposure of the Moon properly. The camera tends to way over expose the Moon. Ditto for starscapes.

Ah. Either I was typing when his post explaining he was up to astrophography appeared or I just didn't see it.

Re: How can I set the camera to 1/125, F11, 100 ISO?

Waddizzle — Fri, 19 Aug 2016 14:01:48 GMT

"Ah. Either I was typing when his post explaining he was up to astrophography appeared or I just didn't see it."

Judging from the post times, I'd venture that you two "cross posted". No harm, no foul. I think most people can notice it.

But, I shoot in M mode quite a bit. Just about the only time that I do not is when I am outdoors shooting under conditions with widely varying light conditions, and I am in a hurry to get a shot: i.e. like trying to photograph creatures in the wild. There are a lot scenarios where shooting in manual is the best choice, more than astrophotography.

When I use my tilt-shift lens, the camera meters the light differently once I begin to add tilt or shift, which forces me to shoot in manual, because I have to set the exposure before I begin tilting or shifting the lens. When I shoot panoramas, I want to have identical exposure on each shot, and so i am forced to shoot in manual. Whenever I am shooting with any of my manual lenses, I will typically shoot in manual, although most will work just fine in Av mode.

If you ever shoot video, most cameras do not allow easy adjustment of aperture with an auto focus lens. So, I mainly shoot video with a fully manual cinema lens, and the camera in manual mode. If you have ever tried to shoot a time lapse series of shots, these are best shot in manual mode, because you frequently want to capture the lighting conditions in the sequence.

Re: How can I set the camera to 1/125, F11, 100 ISO?

TCampbell — Wed, 24 Aug 2016 18:28:16 GMT

For the Moon, you can use an exposure rule call the "Looney 11 Rule". No, I did not make that up.

See: https://en.wikipedia.org/wiki/Looney_11_rule

In simple terms, the rule says that as long as your f-stop (Aperture value or "Av" setting) is set to f/11, then... the shutter speed is simply the INVERSE of the ISO setting.

So at ISO 100, you use a shutter speed of 1/100th.

At ISO 200, you use a shutter speed of 1/200th.

At ISO 400, you use a shutter speed of 1/400th, etc.

The direct inverse relationship only works correctly (for the Moon) at f/11.

If you learn how exposure settings work (e.g. get a book such as "Understanding Exposure" by Bryan Peterson or pick up Scott Kelby's "Digital Photography" series (which I think is no up to 5 volumes but the primer information is in the first volumes if you choose not to buy them all) then you'll realize that you can learn to "trade" stops of aperture for stops of shutter speed.

In other words you can use other f-stops (you don't just have to use f/11) if you trade stops of aperture offset by stops of, say, shutter speed.

Here's a video that helps explain this "exposure" concept: