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Canon Inc. is a prominent manufacturer of cameras and lenses including EOS DSLRs and PowerShot compact cameras.

6 votes
5 answers
6k views

What's the difference between holding a half-pressed shutter button and pressing the AE lock?

As I have been looking around today the AE lock button is supposed to lock in the focus and exposure settings (aperture and shutter) so that the picture can be recomposed before taken. I also believe …
6 votes

Will Canon Cameras fit all Canon lenses?

For fit: Short answer: YES. Longer answer: Each camera has a type of mount and is part of its specifications. All modern Rebels (yours included), XXD (60D/70D/etc), and 7D cameras are EF-S mounts. Fu …
Michael C's user avatar
  • 176k
0 votes

Difference between Canon 18-55mm IS II and IS STM?

STM is really only useful for video. If you have no interest in video then there's not much value in the STM feature itself. However, you may want to look into the quality of the STM lens vs the the …
tenmiles's user avatar
  • 4,378
1 vote

Canon 50mm f1.4 no longer focuses reliably

Reference page 314 of your manual for how to use Auto Focus Micro Adjust (AFMA). Each camera and lens is built to be within certain tolerances. If the camera and lens are on the edge of acceptable t …
tenmiles's user avatar
  • 4,378
16 votes

Why do higher end lenses use USM instead of STM?

USM is fast, STM is smooth. For still images (particularly with sports and wildlife) it is important that focus tracks quickly whereas in video the quick movements of a USM lens make the video feel je …
tenmiles's user avatar
  • 4,378
2 votes
Accepted

Low cost external shutter for controlling shutter speed

There are a lot of options on Amazon, like this one. The basic idea is you put the camera in bulb mode and use the intervalometer to control the shutter. Some may have AEB settings, or you can adjust …
tenmiles's user avatar
  • 4,378
2 votes

Is light the only difference? Or does the camera and lens make all the difference?

Right off the bat I can see that there's a difference in the direction of light. Your model is in shadow while the man is being lit from the side. You have soft lighting which is usually preferred for …
tenmiles's user avatar
  • 4,378
4 votes

Differences between canon 17-85mm and 18-55mm

STM and USM are different kinds of focusing motors. Prior to STM, USM was the preferred option because it was fast and quiet (relative to other kinds of motors that are available). However, it isn't f …
tenmiles's user avatar
  • 4,378
8 votes

Why is my Canon 5DMIII draining batteries overnight?

According to the guys at Magic Lantern, when you open the SD card door and the light flashes while it accesses the SD card, you should wait until several seconds after the light stops flashing as it i …
tenmiles's user avatar
  • 4,378
0 votes

slow glass vs. fast glass

If you're using them for landscape then aperture isn't your concern, but sharpness is. My understanding is that the 70-200's are sharper, but may not be noticeable when stopped down to F/8 or smaller. …
tenmiles's user avatar
  • 4,378
0 votes

FIlter for Canon L 2.8 IS 100mm macro lens?

I buy filters for all of my lenses as a means of protecting the front element. Yes, it will slightly degrade the IQ (not sure it's perceptible, though), but it's a peace of mind; I'd rather replace a …
tenmiles's user avatar
  • 4,378
1 vote

Why does the ISO change with the shooting mode when the aperture and shutter speed are const...

In AV all the camera is trying to do is get the exposure correct (18% grey across your metering area) whereas Auto mode is trying to take a nice picture. Either your metering area is different (becaus …
tenmiles's user avatar
  • 4,378
1 vote

What lens should I buy?

What lens you should buy depends on what pictures you want to take and how your current lens won't take them. With your current lenses you're covered for quite a wide range of pictures. The only thing …
tenmiles's user avatar
  • 4,378
5 votes
Accepted

Will the Canon EF 50mm f/1.4 give better auto-focus results than the 50mm f/1.8?

One thing to note about the 50mm F/1.8 is that it's a fairly cheaply constructed lens. If you touch the focus ring you should notice that there's some slack in it whereas if you use other lenses of a …
tenmiles's user avatar
  • 4,378
2 votes

Choosing the size of SD card for a Canon 550D?

I use a 32GB card, but I feel that was a mistake. If I could do it again I would've purchased multiple smaller cards. If I had more than one card I wouldn't suffer from a single point of failure in th …
tenmiles's user avatar
  • 4,378

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