topic Re: Canon EOS 650D Noise in EOS DSLR & Mirrorless Cameras

Canon EOS 650D Noise

Lostculture — Tue, 31 Jul 2018 08:03:33 GMT

Hi Guys,

Im fairly new to photography and need some advise. All my pictures taken from my canon 650D (with any of my lenses 50mm, 55mm, 300mm) I keep on getting grainy (noise) pictures. I only take pictures on RAW mode, and set my ISO to max 400 when i use shooting modes like P, A+. And when I use M mode I set the ISO to 100. No matter what pic I take in what mode...all my pics are grainy.

Here are the info on this specific picture:

EF50mm f/1.8 ii

5184 x 3456

RAW

ISO 100 50 mm f /1.8 1/50 sec

And on this picture the noise is hectic on A+ (green box) mode and the ISO sets itself so high, regardless me setting it to max 400 should it use Auto mode

ISO6400 300mm f/5.6 1/125 sec RAW

Re: Canon EOS 650D Noise

ebiggs1 — Wed, 01 Aug 2018 21:38:27 GMT

"...and set my ISO to max 400 when ..."

The A+ mode is for someone that doesn't know anything about cameras. It basically turns the Rebel into a P&S. You are telling the camera do everything and I'll pull the trigger. Your photos look normal to me. The bottom shows what ISO 6400 looks like. It will always be more prominent in the darker or shadow area. Even in ISO 400, noise will be present, to a much lesser degree of course, in the shadows and dark areas.

A lot of that can be corrected in post edit. Almost all post editors have a NR slider. I like LR and PS. "I only take pictures on RAW mode...", this is good. It allows to to do the max amount of editing.

Re: Canon EOS 650D Noise

AndyMilnePhotog — Wed, 01 Aug 2018 19:55:23 GMT

Adding to what Ernie said, scene and automatic modes set the maximium Auto-ISO on 6400 by default that cannot be changed. Only the M, Av, Tv, & P modes allow you to use your own maximum Auto-ISO setting.

Andrew

Re: Canon EOS 650D Noise

TCampbell — Thu, 02 Aug 2018 01:31:10 GMT

BTW, if the camera isn’t moving (e.g. on a tripod) and the subject isn’t moving (e.g. the observatory), then you can use ISO 100 and let the shutter speed go as long as it needs to get that shot ... and you’ll have no noise (well... technically every image has noise... you’ll have no discernible noise to human eyes.)

Re: Canon EOS 650D Noise

Lostculture — Thu, 02 Aug 2018 05:24:41 GMT

Thanx allot for all your replies, is there then a better setting for night shots other then the built in Mode..... must i just play around with apperture, iso and my shutterspeed?

Re: Canon EOS 650D Noise

Waddizzle — Thu, 02 Aug 2018 09:16:02 GMT

@Lostculture wrote:
Thanx allot for all your replies, is there then a better setting for night shots other then the built in Mode..... must i just play around with apperture, iso and my shutterspeed?

What are you photographing at night? I use a tripod for taking landscape shots at night.

The above was a 25 second exposure at ISO-100.

Re: Canon EOS 650D Noise

Lostculture — Thu, 02 Aug 2018 09:26:11 GMT

Thanx so much...So the trick is a tripod.....im into stars and the moon so im just struggeling at getting it right. BUT learned much the last few days with rateher staying in M mode and setting everything myself.

Re: Canon EOS 650D Noise

Waddizzle — Thu, 02 Aug 2018 09:32:31 GMT

@Lostculture wrote:
Thanx so much...So the trick is a tripod.....im into stars and the moon so im just struggeling at getting it right. BUT learned much the last few days with rateher staying in M mode and setting everything myself.

The shot of the bridge was taken in Av mode. The camera calculated the shutter speed.

BTW, quality tripods are not made of plastic, have detachable interchangeable heads, and on average cost $200, and up.

Re: Canon EOS 650D Noise

Lostculture — Thu, 02 Aug 2018 09:34:46 GMT

Thanx will go and look at some available!

Re: Canon EOS 650D Noise

Waddizzle — Thu, 02 Aug 2018 09:44:11 GMT

@Lostculture wrote:
Thanx will go and look at some available!

I recommend Benro. They make high quality tripods and heads. But, the best part about Benro is that they also include a high quality case, not a bag, with nearly all of their tripods. If buy a ball head, make sure it has a friction adjustment.

Re: Canon EOS 650D Noise

TCampbell — Thu, 02 Aug 2018 14:16:21 GMT

For astrophotos, get a solid photo tripod (emphasis on being solid for stability ... not on saving weight) and a tracking head such as a Sky Watcher “Star Adventurer” head or an iOptron “Sky Guider Pro” head (both are priced similarly and are in the $300-400 range depending on the accessories.)

This allows you to do long exposure astrophotography of deep sky objects because the head is aligned so that the mount compensates for the rotation of the Earth.

I’ve done 8 minute exposures with such a setup (I use a Losmandy StarLapse head, but that tracking head is no longer manufactured). It easily handles good tracking for typical camera lens focal lengths.

Astrophotography through telescopes gets expensive (quickly) .... typically thousands of dollars. So the notion that you can do this with a normal camera, decent photo tripod, and a $300-400 tracking head is a good bargain and a way to get into the hobby without having to spend a few thousand dollars.