Ah-keong wrote in post #18475797
with such high resolution from D850 / 5DsR.
I read that the minimum shutter speed recommended would be two times of the inverse focal length :
i.e: 50mm -> 1/ 125s
IMAGE LINK: https://flic.kr/p/M5kqn9 watching_tv
The main reason I sold my Canon 50L for the Tamron 45 1.8 VC for use on my 5DSR
- if you want repeated tack sharp results, i.e. 8-9 out of 10 on a consistent basis, and I have completely and thoroughly tested this, that at least with the 5DSR HANDHELD, you need 1/400 @ the 50mm FL
- that is not to say that you can't do it at lower shutter speeds - you absolutely can - and obviously so with flash
- the question is, if you are going to set your minimum, non flashed SS, so that you know when you are reviewing your pictures later in LR, what is the SS where you are going to see 80%+ tack sharp images that are getting you the 50 megapixels of detail, what is the SS you need to use?
- i want to repeat, you do not need this SS to achieve 'sharp' 20 megapixel in detail images handheld for posing models - but you certainly do if you are trying to extract near 50 megapixels in detail repeatedly
- after my months of testing a few years back, I sold all the following lenses (35L, 50L, 85Lii and 135L) - because for me, they just don't work, handheld, at shutter speeds I need and want to use, on the 5DSR
When I shoot the 5DSR with the Tamron 45 1.8 VC, I generally shoot posing people, between 1/60 - 1/80th, and I easily hit the 80%+ tack sharp rate. Below is one of a series of pictures I took of my daughter, all were at 1/60th - none of them missed. If you want to see how sharp the actual image is, you have to download the Original from the Flickr link as the displayed image on Flickr is no where near as sharp. When you zoom in, even from that range with a 45mm FL, each of her left eye eyelashes, is tack sharp @ F2 - not saying this is 'important' about whether or not this is a good picture, but if you care about filling your hard drive with big files, and the ability to crop that large megapixel cameras give you, then you will care.
by Paul O'Neil
, on Flickr
Hockey and wedding photographer. Favourite camera / lens combos: a 1DX II with a Tamron 45 1.8 VC, an A7Rii with a Canon 24-70F2.8L II, and a 5DSR with a Tamron 85 1.8 VC. Every lens I own I strongly recommend [Canon (35Lii, 100L Macro, 24-70F2.8ii, 70-200F2.8ii, 100-400Lii), Tamron (45 1.8, 85 1.8), Sigma 24-105]. If there are better lenses out there let me know because I haven't found them.