nandadevieast Offline Upload & Sell: Off
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Thank you
One thing that i find odd is people saying that slow shutter induced shake/blur will be similar if you down sample the 42mp to 24mp. I will tend to think that a blur, once happened, will be there irrespective of the resolution.
mjm6 wrote:
Here's how you could test the two to determine whether you should keep the R or not...
Shoot a series of images at a few SS from clearly too long to clearly OK for hand held shooting (presumably with IBIS activated for both). Also, make a few reference images on a tripod of the same subject with IBIS turned off. Make sure there is details in the subjects, and make sure that the images are all accurately focused. You aren't testing that (I don't think), so you should eliminate that variable. You'll probably need to shoot a few at each SS so you can get a sense for whether you can reliably make a good image by looking at a handful of them to see what the keeper rate is for the images when you are at the threshold.
Then, take copies of the R images and resize them down to 24MP. Make the comparisons. If everything is equal in the cameras, you probably won't see any substantial difference.
Then, take copies of the non-R images and resize them to 42MP and make the comparisons again.
I suspect that what you will find is that the R will at least match the non-R images at the 24MP setting, but will beat the non-R images at the 42MP setting because it has more resolution capability built into the system. So for non-critical work, either camera will be fine, but for more critical work (like images you intend to enlarge, or images you intend to crop substantially), the R will prove to be a better source.
All this means is that you have to rise up to the challenge that a high MP camera presents when you are trying to get the most out of the image, but if you shoot both in a similar manner, you will probably achieve a similar final result regardless of the resolution when you are in the threshold region, and certainly when the shots aren't critical in nature.
Ultimately, you have to decide what you really need. My impression of comparisons between the two is that I'm spoiled for the higher resolution in the R. I wouldn't choose to use an a7III over the R unless I didn't have a choice. The only real penalty is the larger files from my testing, but I didn't aggressively compare IBIS between the two....Show more →
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