nnowak
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Veteran Member
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Posts: 9,073
Re: CANON M50 + Vitrox booster + Canon f2.8 MACRO 100mm
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cjgj wrote:
Hello, beginner to photography here.
I was hoping to use the M50/Vitrox booster as an EF mount camera, I mounted the Canon f2.8 MACRO 100mm and what's weird is that with the CANON f2.8 MACRO
100mm, on the viewfinder the photos look great but when I actually take the photos, they are pretty blurry and very grainy. (for example taking photos of the details of a watch, looks great in viewfinder but the actual photo is super grainy and little darker) - see below picture. Any idea why?
Another issue I'm having, when I try to take photos with wide depth of field (f20 ish) with shutter speed between 100-200 and auto ISO, the viewfinder goes really really dark to a point I can't see what I'm shooting. Is M50/Vitrox/Canon macro f2.8 combo not meant to be shot with f stop so high? This is a problem for me as I got the combo to do some wide field of depth shots that require f stop >20.
Thank you so much in advance!

Please post a full size JPEG with the EXiF data intact. Anything straight out of the camera should work. No editing or cropping.
With thst said, I am almost positive your problem is not having enough light. By default, you camera is going to max out at ISO 6400. If you set a shutter speed of 1/200 and apeture of f/20, the camera will still max out at ISO 6400 even though you really need something like ISO 512,000 to get a proper exposure. Basically, the settings you are trying to use are exceeding the capabilities of your camera for the amount of light you have available. Being at ISO 6400 is also why your photos are looking grainy and blurry.
First off, are you using a tripod or are you trying to handhold your camera? For static objects like your posted sample, you should absolutely be using a tripod. A stable tripod will let you drastically lower your shutter speeds which will get more light to your camera. Second, set your aperture wide open to f/2.8 and watch what that does to your auto ISO settings. Try to get you ISO to 400 or lower and the graininess/blurriness should be gone. Finally, find a way to get a lot more light on your scene. Either shoot near a window with a lit of natural light, add strobes, or add a lot of constant output LEDs.
Figure out your light levels and camera settings to get a good looking exposure. Only after you are comfortable with how all your settings and light levels impact exposure should you start stopping down the aperture to increase depth of field.