Grenache wrote: Steve Spencer wrote: Nielk Mike wrote: Choderboy wrote:
"w/o compromising on quality. The RX1R MkIII is a perfect step in that direction. It is 35/50/70 lens with a camera attached to it."
Using a 35mm lens and cropping to FOV of a 70mm lens is compromising on quality.
It results in 45 megapixels of the sensor's 60 mp being discarded .
The compromise might be acceptable to you, and that's fine.
But it is a compromise.
If it wasn't, why couldn't you just consider the RX1RIII a 35/50/70/90 ?
90mm? Well, I do. I can crop 3x and still get a 4K image to show on my screens and print to poster size. There is no obligation to use the full 60MP all the time, you know :-)
You do realize that when you use a 3X crop that turns your 36 X 24 mm sensor into a 12 X 8 mm sensor. You go from an area with 864mm squared to 96mm squared. An iPhone sensor is 9.6 X 7.2 mm with 69mm squared. If you crop to 3X you have almost turned your FF sensor into an iPhone sensor. If you are ok with that keep in mind that modern cell phones typically have 3 lenses and add zero size and weight to what people typically carry. That might be enough for you.
Exactly. I vomit a little every time someone says that they can use their camera as three focal lengths via cropping. That is utter nonsense and marketing blah…the opposite marketing (but that happens to be true) that advocated for going full frame over aps-c and that over m4/3.
Yuck. Better to get even a mid quality zoom lens than crop the snot out of a good prime and have used only a fraction of your precious pixels.
I have a completely different view. Using crop mode on my A7R5 is one of my favorite things.
If I have a 28mm lens on the camera and see a quickly changing scene that needs a 40mm, I hit a button and bam! I have a 26mp 43mm image. And it’s almost exactly the same quality I would have for shooting a 24mp full frame camera. What’s not to like about that? Crop mode is very handy for framing, especially for portraits since you see exactly what you’ll get instead of shooting the full frame and guessing where you’ll want to crop later. And using crops DOES give you more flexibility with a prime if used judiciously.
I print big too - 40”x 60”. A 26mp image can easily get me there depending on the subject. I like to use all the tools available to me with a high megapixel sensor and judicious cropping is a very valuable tool.
Aug 24, 2025 at 12:53 PM
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Grenache wrote: Steve Spencer wrote: Nielk Mike wrote: Choderboy wrote:
"w/o compromising on quality. The RX1R MkIII is a perfect step in that direction. It is 35/50/70 lens with a camera attached to it."
Using a 35mm lens and cropping to FOV of a 70mm lens is compromising on quality.
It results in 45 megapixels of the sensor's 60 mp being discarded .
The compromise might be acceptable to you, and that's fine.
But it is a compromise.
If it wasn't, why couldn't you just consider the RX1RIII a 35/50/70/90 ?
90mm? Well, I do. I can crop 3x and still get a 4K image to show on my screens and print to poster size. There is no obligation to use the full 60MP all the time, you know :-)
You do realize that when you use a 3X crop that turns your 36 X 24 mm sensor into a 12 X 8 mm sensor. You go from an area with 864mm squared to 96mm squared. An iPhone sensor is 9.6 X 7.2 mm with 69mm squared. If you crop to 3X you have almost turned your FF sensor into an iPhone sensor. If you are ok with that keep in mind that modern cell phones typically have 3 lenses and add zero size and weight to what people typically carry. That might be enough for you.
Exactly. I vomit a little every time someone says that they can use their camera as three focal lengths via cropping. That is utter nonsense and marketing blah…the opposite marketing (but that happens to be true) that advocated for going full frame over aps-c and that over m4/3.
Yuck. Better to get even a mid quality zoom lens than crop the snot out of a good prime and have used only a fraction of your precious pixels.
I have a completely different view. Using crop mode on my A7R5 is one of my favorite things.
If I have a 28mm lens on the camera and see a quickly changing scene that needs a 40mm, I hit a button and bam! I have a 26mp 43mm image. And it’s almost exactly the same quality I would have for shooting a 24mp full frame camera. What’s not to like about that? Crop mode is very handy for framing, especially for portraits since you see exactly what you’ll get instead of shooting the full frame and guessing where you’ll want to crop later. And using crops DOES give you more flexibility with a prime if used judiciously.
Aug 24, 2025 at 12:48 PM
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