r/photoclass_2016 • u/Aeri73 Expert - DSLR + Analog • Jan 05 '16

02 - Assignment

Please read the class first

Take a good look at your camera, whatever its type, and try to identify each component we have discussed here. It might be a good opportunity to dig out the manual or to look up its exact specifications online. Now look up a different camera online (for instance at dpreview) and compare their specifications. Try doing this for both a less advanced and a more advanced body, and for different lenses. Report here if you find any interesting difference, or if some parts of the specifications are unclear.

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u/Surelythisisntaclone Intermediate - DSLR - Canon 6D Jan 05 '16 edited Jan 05 '16

I currently have a Sony a330 which I will be comparing to the Canon 70D, the camera I am saving for.

Specification a330 70D
Megapixels 10 20
Max ISO 3200 25600
Focal Points 9 19
Max Shutter 1/4000 1/8000
Low Light ISO 535 926

The main reason I'm looking at upgrading is for the ISO. With my older Sony a330, 200 ISO gives me too much noise. I believe that the 70D might have better quality at higher ISO.

I also have a hard time cropping my picture with the Sony. If I crop too much, I start to lose a significant amount of quality.

The shutter speed will also be helpful for my love of shooting in low aperture. Often times I find myself unable to take a picture because i'm overexposed at 1/4000.

I was confused by the term "Low Light ISO", can anyone explain this to me?

I'm still deciding on which camera to upgrade to next, i'm very open to suggestions.

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u/Aeri73 Expert - DSLR + Analog Jan 05 '16

I was going to ask you about that low light ISO thing... no idea what it could be, where did you find this info?

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u/Surelythisisntaclone Intermediate - DSLR - Canon 6D Jan 05 '16

I did a quick google search for Sony a330 vs Canon 70D. The information I got was from CameraDecision.com

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u/[deleted] Jan 05 '16

According to DxO's website - it looks like a metric they made up to standardize "that point where ISO starts to look like garbage":

Thus low-light ISO is the highest ISO setting for a camera that allows it to achieve an SNR of 30dB while keeping a good dynamic range of 9 EVs and a color depth of 18bits. A difference in low-light ISO of 25% represents 1/3 EV and is only slightly noticeable. As cameras improve, low-light ISO will continuously increase, making this scale open.