Canon T5i Shutter Issue??

[kkola]

Hello, I just recently purchased a T5i Rebel. I was playing around with it and it sounded like there was something wrong with the shutter. It seems slow and maybe a little sluggish. If I hold down the shutter, it starts somewhat quick then quickly slows down the rate it takes pictures at. I'm not sure if this is how it should be or if there's something wrong with it. I attached a video. Someone please help. 

[Tronhard]

As to formatting:  Different systems: PC's vs Macs vs cameras can format cards in different ways.  So it is important to format any card in the camera in which it will be used.  Writing is more critical than reading, so a card formatted in a camera should have no issue being read on a computer.

Furthermore, when you have downloaded your images from a card, do not just delete the files, format the card in the camera.  This is because deleted files are not actually fully removed, they are marked as available to overwrite, but there may be errors that create issues when you want to use those areas for re-use, resulting in corrupted images or even loss of the card completely.

Finally, never remove a card from a camera with the power on; similarly, I still recommend going through the computer's eject process to remove a card, or USB drive from a computer.  In this case it is because the files in the portable device may be tied to a programme and marked as open and in use. If the card is just removed, the whole device can be rendered unusable.  I have had associates who have lost significant amounts of valuable information by not following this protocol.

[AtticusLake]

For stills it matters if you're shooting bursts.  In the video you posted, you're holding the shutter button down, and obviously it's slowing up.  If we're right and the card is the issue, then a faster card should mean that you can shoot continuous/burst for longer, faster.

As for formatting, in theory, it shouldn't matter where you format your cards.  But filesystems are complex, and there could be some compatibility issue, so the general recommendation is to format your cards in the device where they will be recording - i.e. in the camera.  However I wouldn't expect this to affect speed.

However, formatting the card, as opposed to just deleting all the old files, *could* affect speed.  Generally you should format, as this completely resets the filesystem *and* lets the card know that the data blocks are no longer in use.  The card needs to know this for best performance.

[rs-eos]

As AtticusLake points out, you'll want to see what the sustained write speed of the card is.  That is by far the most useful metric.  Unfortunately that is sometimes very difficult to find.  The more recent SD cards have a V-rating on them.  e.g. V30 means sustained writes of 30 MBps (240 Mbps). 

Example: You're using a V30 rated card.  Your camera can take 5 images per second.  You're shooting RAW+JPEG and say that would be around 20 MB total per image.    After one second, you have 100 MB of data, but the card can only write 30 MB of that during that time.  So the buffer in the camera begins to fill.  Eventually, it will reach capacity and you'll need to wait for more data to be written out to the card.

For your camera, yes, definitely avoid micro-SD cards.  I believe your camera can only work with UHS-I rated cards.  These I believe kinda max out at being V30 (30 MBps sustained writes).   Cameras that could work with USH-II cards could go up to V90 (90 MBps sustained writes).   This is why you also see photo and video gear using media other than SD (for higher data save rates).

Having said all that, the printed max read speed on the card is still useful.  If your card reader, computer, hard-drive are fast, you'll benefit from using a 170 MBps card over a 95 MBps card when transfering photos to your computer.

In my case, when reading the V90 cards on my iMac Pro (built-in SD UHS-II slot), the cards are the bottleneck; reading only at 300 MBps.  The destination drive can handle write speeds of 600 MBps.   So recently I have upgraded my slower read-speed SD cards to the higher-read-speed versions when possible.

[kkola]

Yes this makes sense. My biggest concern was originally the shutter. After all the responses it's clear the issues I was having was because of the SD card. Taking all that into account I will definitely continue to make sure I get a proper SD card. As for the computer, I am on a MacBook Air which also has the SD slot. I'll further do more research to make sure I get proper SD cards for the camera.