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14 votes
Accepted

What's causing this blow-out of neon lights? (SL2 vs a7c)

Tl;dr: The Sony exposed less, reducing bloom. The Sony's lens plays in a different league. A larger sensor helps. The first thing to note is that the exposures are not equivalent. The reason the ...
4 votes

What's causing this blow-out of neon lights? (SL2 vs a7c)

Accuracy of focus and camera movement during the exposure. 1/80 vs. 1/125 plus the ability to steadily handhold the camera.
  • 36.9k
3 votes
Accepted

Canon ETTL-II and the Canon 50mm f1.8 STM lens

The EF 50mm f/1.8 STM does report distance information. As do all Ring Type USM, STM, and Nano USM lenses. In the past, only lenses with Ring Type USM Auto Focus had distance info. Older lenses with ...
  • 11.6k
2 votes

How to increase photo file size without resizing?

In theory: Load the image into your favourite non-trivial image editing program (GIMP will do the trick and is free) Save the image at high enough quality that it is the right size; in GIMP this is: ...
  • 20.1k
2 votes
Accepted

Why would my flash be firing when attaching to hotshoe, but then not afterwards?

Why? Because something is shorting the center pin of your flash's hot foot to the ground contacts on the hot foot. That something seems to be two of your three Godex X1R-C receivers. External flashes ...
  • 170k
2 votes

What should I expect from Canon EF 24-70mm f/2.8L II USM?

What should I expect from Canon EF 24-70mm f/2.8L II USM? Less than you're led to believe from online forums, where everyone discusses this stuff like it's life and death and where L lenses are ...
  • 49.9k
2 votes

What's causing this blow-out of neon lights? (SL2 vs a7c)

I've used the Canon EF 50mm f/1.8 II plenty in the past. A lot of folks talk about how fantastic a lens it is. They've even nicknamed it the Plastic Fantastic. That's mostly because it's the first ...
  • 170k
2 votes

What's causing this blow-out of neon lights? (SL2 vs a7c)

Neon lights flicker with the frequency of the AC electric supply. 60 Hz in this case, or once every .017 seconds. I suspect that the slightly longer exposure on the right caught more of the brighter ...
2 votes

What's causing this blow-out of neon lights? (SL2 vs a7c)

I would say the difference is primarily due to handholding technique and image stabilization... The Canon SL2 is dependent on 2 axis lens-based stabilization, which the Canon 50mm doesn't have; the ...
2 votes

What's causing this blow-out of neon lights? (SL2 vs a7c)

There are many things to observe about these two images: The Sony image is more accurately focused but has some camera shake / motion blur. The Canon image is definitely off-focus - you can look at ...
  • 702
1 vote

What is the optimal pixel count on a cropped sensor for Canon 100mm macro USM lens?

Distilling a large amount of data down to a single number is inherently a compromise in terms of comparing two different lenses. For example: One lens may be sharper at the center of the field but not ...
  • 170k
1 vote

What is the optimal pixel count on a cropped sensor for Canon 100mm macro USM lens?

DxOMark's "perceptual megapixel" rating is an attempt to distill a lens's MTF charts, which describe the lens's optical resolution of sagittal and tangential rays as a function of distance ...
  • 31.2k
1 vote

Canon ETTL-II and the Canon 50mm f1.8 STM lens

No it's not true for the STM version. I have taken pictures with it, and the EXIF data clearly shows "focus distance lower" and "focus distance upper" information. So the camera is ...
  • 6,345
1 vote

How to increase photo file size without resizing?

Nowhere in those instructions it says to upload a JPEG. Save it as uncompressed TIFF and it will be good enough for government work (literally).
  • 6,869
1 vote

How to remove external flash stuck on camera body?

https://www.youtube.com/watch?v=lGFcjrXkzh4 this video helped me - same problem as probably most. In front of the flash below the red TTL lights above the locking wheel there is a small space where ...
  • 11
1 vote

Should the iris of a Canonet QL17 contract at all in AE mode at maximum aperture?

I've seen this occur as a limitation on meter range in my own QL17. The way it works is this: depending on the ASA speed setting for the meter, the camera may not be capable of shooting auto-aperture ...
  • 6,673

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