frankraney wrote:
Dam, I've got gas and can not decide between the D5600 Or the D7100.....I love the features on the 5600 but I love the expanded ISO on the 7100. The 5600 has a good iso range but I think i'd like the iso 50 on the 7100......Both are on sale at the local camera store......I will get the body only and add a lens, not kit lenses. I'm thinking of the 18-140 or the 70-300, I really like the 18-140 and that may be my choice. decisionis decisions......it's gonna happen today......any help?
Thinking of a doubler too, but the guy at the store says it won't work with either lens I am looking at. I thought the douibler would work with any af lens....Gotta do some more research on that......that don't have to happen today...
Dam, I've got gas and can not decide between the D... (
show quote)
Why to you feel you need ISO 50? A 1-stop ND filter can accomplish the same thing, if you feel you need another stop slower shutter speed or larger aperture. Personally I avoid "expanded" ISOs because they aren't "real". They're accomplished by shooting at the highest or lowest ISO in the non-expanded range and then "pushed" or "pulled" as needed to achieve the expanded ISO. You can do the same thing in post-processing, too. Higher expanded ISOs lose resolution and amplify image noise. Lower expanded ISOs reduce contrast and saturation. At the other extreme, the D7100's highest avail. ISO without expansion is 6400 (12800 and 25600 are expansion ISOs). The 3.5 year newer D5600 has two stops higher 25600 without expansion, which is probably more usable thanks to newer sensor, software and processor.
So, if anything, the D7100's ISO range would be a step backward from the much newer D5600.
In other ways the D7100 has some advantages...
- Better build including more sealing for weather resistance and a true pentaprism versus a "penta-mirror" in the D5600
- Somewhat more sophisticated AF system (51-point versus 39-point and 15 "cross" type points vs 9).
- Ability to utilize more lenses, thanks to in-body focusing motor. D7100 can autofocus "AF" lenses that the D5600 can't. (Both can use "AF-S" lenses. If I recall correctly, D7100 needs a firmware update to use "AF-P" lenses, and still may have some limitations. D5600 can use "AF-P" without any problem.)
- Micro Focus Adjustment feature is on D7100, but not on D5600.
- Higher resolution rear LCD monitor (but the D5600's is an articulated Touch screen and the D7100's isn't)
- Higher specification shutter... top speed of 1/8000 & flash sync 1/250 versus 1/4000 & 1/200 on D5600... life expectancy of 150,000 clicks versus 100K with D5600.
- 6 frames per sec continuous shooting versus 5 fps with D5600 (however, D7100 is notorious for having a very small image buffer, so cannot shoot long bursts).
There is a lot more pro and con you can see here:
https://cameradecision.com/compare/Nikon-D7100-vs-Nikon-D5600https://www.apotelyt.com/compare-camera/nikon-d5600-vs-nikon-d7100https://www.imaging-resource.com/cameras/nikon/d7100/vs/nikon/d5600/In a nutshell, I'd say keep what you've got unless some of the features of the D7100 are overwhelmingly important to you. The 3.5 year newer D5600 is in many ways a superior camera or the equal of the D7100.
The guy at the store is correct. 2X teleconverters will not work on those lenses. A 2X teleconverter reduces light passing through by two full stops. Those lenses you mention are around f/5.6 already, so after adding a teleconverter you'll have effective f/11 aperture. This will prevent AF from working and make your viewfinder very dim to try to manually focus. To be practical for use with 2X a lens must have a max aperture of at least f/4, but f/2.8 is a lot more practical. FYI, a less extreme 1.4X teleconverter only "costs" one stop of light and might be possible on more lenses. All teleconverters work better with prime lenses, too... than they do with zooms such as you're considering. There are myriad possible combinations, some of which might work okay.... but there is some loss of image quality with teleconverters. With a prime that has very high image quality to start with, the loss may be minimal and tolerable. With other lenses and especially with many zooms, not so much. The teleconverter will amplify any short-comings of the lens.
Some teleconverter designs also use a protruding front element that needs to fit inside the rear of the lens it's fitted upon. This physically prevents some lenses from being used with those teleconverters because the inner barrel of the lens isn't large enough diameter or because the rear elements of the lens are too far rearward and will interfere with the teleconverter. This is especially true of "DX" or crop-only design lenses, which are inherently smaller and often use a design with more rearward elements.