As one who has a 12 MP DSLR, but is looking at newer models at higher MP levels (20-30+/-), my concern is the affect that such a move would have on my computer. Its not the latest model, but includes post processing software. None of this is the latest and greatest, but serves my purposes just fine.

I know that a higher MP count has its artistic advantages (and that it might require better glass for sharper pictures), but how would these added MP affect the computer's operation? At what MP level would there be a significant affect on the computer....at what point does it really matter? Not concerned about the time to download (have all the time in the world). Currently have plenty of storage space.

Thanking you in advance for your insight into the question.

I'm just getting started with my new Sony A6000, and I am trying to understand the relationships between my various lenses and how they work on a crop sensor camera like mine.

I have a few old Minolta and Vivitar lenses from my film days. I bought a cheap adapter on eBay and have been playing around. I am trying to understand how the apertures and focal lengths work on an adapted full-frame lens.

My Sony lenses are the 16-50 and the 55-210 kit lenses. When I compare these to my film lenses, I know that I need to apply the crop factor, which means that my lenses will work more or less like a 24-75 and an 83-315 would on a film or full-frame camera. Is this also true of the apertures? Is a 3.5 max aperture really more like 5.25?

I guess the idea here is to understand what the advantages would be of using say, my 50mm 1.7 Minolta lens. Are the apertures on my old film lenses comparable to the stated ones on my modern Sony lenses (such that the 1.7 on my Minolta can be compared to the max available at 50mm on my Sony of 5.6)?

Interestingly enough, I took some pics at 50mm with the Sony 16-50, and then shot the same scene with the Minolta, at varying apertures. The Minolta at 1.7 was very smeary looking, but as I worked my way to smaller apertures, it got better. I'm not at all sure though that I see the great advantage of using the 50mm manual lens vs. having the zoom and autofocus of the Sony lens. The sharpness was not really any better to my eye, though I imagine there might be specific cases where I could shoot at say 2.8 or 4, and get better background blurring.

Sorry if I am meandering here, but I guess the main question is whether both aperture and focal length are comparable when looking at full-frame or adapted film lenses vs. a lens made for a crop sensor camera. Oh - and does the adapter figure in at all here? Do I lose anything when adapting a lens? I guess I am just trying to figure out whether it's even worthwhile to use my old lenses.

Brian

Virtually all cameras let you raise the ISO to levels that were unheard of a few years ago. If you have to get a shot in dim light, raise the ISO or lose the shot. It's that simple. "Yeah, I could have gotten a great shot of that black cat in the coal bin, but I didn't want to raise the ISO." Either accept the noise or deal with it in post. There's lots of good noise software.

http://www.topazlabs.com/denoise
http://www.lightstalking.com/noise-in-your-images-use-these-easy-strategies-to-improve-your-noisy-photographs
https://photographylife.com/photo-noise-reduction-tutorial

I’ve been using Photoshop/ACR for many years — purchasing updates along the way. Now have PS CS6. Should soon be receiving new Nikon D850. As I understand, my alternatives are to go to the subscription basis for PS CC (which I absolutely do NOT want to do); to convert all the RAW files to DNG and continue to use CS6 (although it’s not clear to me whether ACR will work the same on those files); or, to change to a whole new PP system. So, my questions are:
1). Are any of you going through (or, have gone through) a similar decision process — either for the D850 or for another ‘new’ camera’. And, what did you do?
2). If any are doing the conversion process to DNG, how onerous is that? Does ACR work the same on DNG as it did directly in the RAW files? Seems to me that it’s a bit of a stop gap measure.
3) Lastly, if you changed to a new processing system, which one did you choose? My PP needs are currently met 70% by ACR. Do not do a lot of advanced layering, etc. However, I do use some plug ins like Nik. Plus, minor tools like erase, sizing, etc. I do not do sessions involving hundreds of images (like weddings) so cataloging and sorting is not a major item; Bridge has worked ok for me. As alternatives to PS, am thinking of Capture One. Any thoughts on that.
I really appreciate any feedback. This situation created by Adobe moving to subscription basis irritates me beyond words.
Thanks,
Bill