| GrumpyOldMan |
05-06-2021 10:17 AM |
Quote:
Originally Posted by DAVES
(Post 1940401)
The laws of photos have not changed. They often are no longer taught. For a 35mm camera a handheld speed is the focal length of the lens thus 500 mm 1/500th of a sec.
If the shutter is opened twice as long 1/500th vs 1/1000 you can lower the sensitivity
as in 6000 to 3000. Old school perhaps, high speed was tri x asa 400 that you could push to 800. Kodachrome was asa 25.
|
Thank you.
The D7500 is a cropped frame so it is slightly different, but the same idea applies.
I am learning to handhold a 5 lb 500 mm lens steady. With VR on at 500 mm, some people can handhold it down from /1500 to 1/60 or so (3 stops) but not me. Based on my "tests" during this walkaround. I was able to handhold it down to around 1/250 (one-stop) if I really relaxed.
The D7500 "noise" is acceptable (to me) up to around ISO 2000. My older D7100 is only "good" up to around ISO 400. these shots are pretty grainy and not really acceptable for printing, but are "okay" online. I want to get a few printable shots before the season changes and the birds all leave. :)
I was mostly experimenting with how to hold the lens, and what settings would work for me. I have a ways to go - these were the mostly keepers out of about 100 shots. LOL. I hope to increase the ratio over time.
Also, all my life I have shot with Canon equipment. My first being a CanonFlex in 1960 or so, followed by AE-1's and then A-1, then into digital with the D20, D50, etc. When I retired and moved here I inherited some Nikon equipment (D7500 and D7100 and a bag full of lenses) and I am still learning how to use it.
It's fun. |
