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High mega pixel camera problem

ARI 20 602 1 United Kingdom
11 May 2022 1:20AM
I acquired a Canon EOS 5DsR to replace an EOS 5D classic. I was puzzled with many un sharp images produced. Camera combination was 5DsR + 600f4+ x1.4 TC mounted on bean bag on a window sill of a stationary car. Camera was at Av and A modes. EXIF data indicated that the bulk of the un sharp images were at1/1000 sec and below.

I recently stumbled across a snippet in an article that mentioned that this is not uncommon with images produced with high megapixel cameras because of the high density pixels on the sensor, 50+mp on the DsR. Solution, use higher shutter speeds. No guidance on minimum shutter speeds to be entertained to avoid camera shake and ASA noise.
Grateful for guidance and thanks.
sherlob Plus
17 3.3k 133 United Kingdom
11 May 2022 11:19AM
The high pixel count is very unforgiving and ANY camera movement is likely to be recorded. Upping your shutter speed is definitely one way to go but also ensure that your camera technique is faultless. E.g. rest your arm on top of the lens to help prevent any movement - use a kimball and tripod where possible, back button focus, shoot in short bursts (the first image may be soft as you depress the shutter release, but the second image will likely be steadier, the third may be soft as you release the shutter) or use a remote shutter release. If you subject will allow consider mirror lock up or live view shooting (the mirror is up when using live view). The maximum focal length I use currently with my 5DS is 600mm @ f5.6 (a 120-300mm f2.8 zoom with x2 converter). The more I have practised the higher my hit rate and I have used the combination successfully handheld.
Nigeyboy 15 1.1k United Kingdom
11 May 2022 11:24AM
I read some where that with high MP cameras, the old 1x lens in mm = shutter speed no longer works, and should be closer to 2 x. So a 600mm with 1.4 should be closer to 1/2000 sec.

Carabosse Plus
20 43.7k 270 England
11 May 2022 11:51AM
Just took as handheld photo with the 108 megapixel camera (24mm FF equiv) on my smartphone at 1/20 sec at f1. 8 using manual mode and RAW+JPEG.

Sharp as a tack even cropped. Will experiment further. Smile

ARI 20 602 1 United Kingdom
11 May 2022 2:14PM
I use the recommended stabilizing techniques and camera/lens is combo on bean bag filled with about two kg of beans, a pretty good pillow. Mono pod and tripod is not practical as one is not allowed outside the vehicle for safety reasons. Looks that Njgeyboy's X2 method may be the solution.
stuwhitt Plus
18 1.4k United Kingdom
12 May 2022 11:06PM
The whole high MP causing soft images thing is a red herring IMHO, the pixel density on a 7D MKii is greater than a 5DS R, and is a very popular wildlife camera, technically the 7D MKii is a higher resolution camera than the 5DS R, though the manufacturers marketing departments won't agree.
The autofocus system is worlds apart from that on the 5D MK1, I understand that the cross-hair focus points are only effective on lenses or extended lenses with a maximum aperture of F5.6, which I suspect will hit you with a limitation on your lens extender combo.
ARI 20 602 1 United Kingdom
13 May 2022 12:33AM
I am not comparing the autofocus system between the Mk1 and the DsR. My experience with the DsR showed that with the long lens and TC combination, several images taken below 1/1000 sec appeared soft in spite of using good technique. No probs at higher shutter speeds.
ARI 20 602 1 United Kingdom
13 May 2022 2:09PM

Just come a similar comment on soft images produced with high mega pixel cameras in U Tube talk. See link below:

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