Steve Spencer
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zhangyue wrote:
Hi, Steve, thank for the response. I know the green dot in SLR is not as accurate as Z because it is PDAF in nature. However, most cases I use it and value it is for speed and fast control, I don’t need down to pixel accuracy. (With experience, this can be done also actually) That is where it shine for me.
I want to be clear about TechART here, do we change aperture on lens or body? Or can be both? With Z implementation on native lens or ZF lens with CPU on FTZ, it will focus at shooting aperture until f5.6. Than it will focus at f5.6 no matter how you stop down the lens. I guess I want to know a little bit detail on behavior. I always prefer shooting WO. Using green dot, focus WO, you will guarantee have a keeper shoot f8 with any lens I tried.
As you said, this Voigtlander seems a no brained if it also happen to have wonderful bokeh. Based on images, I have a feeling it has stronger bokeh than MP100. But I am not sure either as no one compare them before, I thought you might have that lens, hence for asking.
If I am patient, 100MP ZE can be have less than 600 and finally a right focus direction lens and I seems always prefer 100MP’s bokeh to 135 APO Zeiss, maybe it is the focal length, maybe indeed MP100 just have more gentle bokeh.
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Hi Michael,
Let me try to answer your questions. You asked, "I want to be clear about TechART here, do we change aperture on lens or body?" The answer is it depends on the lens. If the lens has an aperture ring, then you change the aperture on the lens, but you will want to change the aperture on the camera as well so the the EVF has the right brightness. If the lens has no aperture (as several of the lenses for Sony E mount don't) then you change the aperture on the camera. I assume lenses with aperture rings that let you set the aperture to a certain value to use the camera to set aperture still work that way, but I haven't tested that and wouldn't use it as if there is an aperture ring that is what I am going to use.
Most of my lenses have aperture rings, so I can't answer what happens when you stop down with a lens that does not have one. I am not sure if you are focussing wide open. I doubt it works that way, but maybe someone else can comment and I will try to check today and get back to you about that. For lenses with an aperture ring (including the Zeiss Loxia and Voigtlander lenses) I am pretty sure you are focussing at shooting aperture. Maybe there is a way to adjust the camera so that you are shooting wide open. Again maybe somebody else knows how to do that, but I don't. I will try to play around today and see if I can figure out how to do that. In the meantime, there is a thread on the techArt Nikon Z camera to Sony E mount adapter on the Nikon forum. You might want to ask over there.
I wish I could compare to the 100 MP, but I replaced that lens with the 135 f/2 APO awhile back. I could compare the CV 110 to the Zeiss 135 f/2 APO if that would be helpful, but it sounds like you like the 100 MP better than the 135 f/2 APO, so probably not a helpful comparison. In the mean time I will post a couple of macro shots with the 100 MP below. Of course different conditions but they are somewhat similar type of shots to the one's I posted above.
Edit: After looking at the thread in for the adapter in the Nikon forum I should clarify the use of the aperture ring. On manual focus lenses like the Voigtlander and Zeiss Loxia lenses you have to use the aperture ring. The camera and adapter cannot control the aperture. If you don't care about EXIF, then you can just leave the aperture on the camera set to f/2. If you do care about the EXIF, then you can set the aperture on the camera to match the aperture you are using. This works up until f/5.6, greater than f/5.6 you will either have to set the aperture to f/2 or you can set it at the aperture at which you are shooting, but the camera will think the lens will stop down from f/5.6 and you will have to adjust exposure using exposure compensation. For example, if you set the aperture ring to f/8 and set the camera aperture to f/8 you will need to use -1 stop exposure compensation or your shots will be over exposed. Mathieu18 has a nice illustration of this with pictures on the adapter thread in the Nikon Forum. On AF lenses with an adapter ring like Sony GM lenses, the aperture ring does not work with the adapter.
Canon EOS 5D Mark II Zeiss Makro-Planar T* 2/100 ZE lens 100mm f/2.0 1/800s 100 ISO 0.0 EV
Canon EOS 5D Mark II Zeiss Makro-Planar T* 2/100 ZE lens 100mm f/2.0 1/160s 400 ISO 0.0 EV
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