pdmphoto wrote:
I find that off center is where close-up lenses do poorly. How are the edges of the frame for sharpness/contrast?
Same here. I find that I need to step down the 50/2 APO to f/4 for great off-axis performance. (Still not as good as CV 65/2 APO wide open)
I prefer using an extension tube with the CV 50/2 APO.
pdmphoto wrote:
I find that off center is where close-up lenses do poorly. How are the edges of the frame for sharpness/contrast?
That is true, but the question is how important is edge sharpness for macro...
Fred Miranda wrote:
Same here. I find that I need to step down the 50/2 APO to f/4 for great off-axis performance. (Still not as good as CV 65/2 APO wide open)
I prefer using an extension tube with the CV 50/2 APO.
The extension tube image is slightly softer and reduces the aperture by a full f-stop, but shows less CA towards the edges.
The achromat also introduces some field curvature, making it almost impossible to get a flat surface entirely into focus.
I am wondering why the focus throw on Voigtlander lenses is linear.
I think it would make the focus experience better if they would apply a non-linear focus speed (e.g. below 1m double the focus speed). Even on the CV 50/2 I sometimes think the focus throw is on the long side when switching from infinity to close focus.
The distributor here in Singapore only managed to secure 2 units of this lens. I bought one of them
Anyone using alternative hood on this lens that's shorter? If I remember correctly, there were some discussion on alternative hood for this lens here. Too many pages to search through...
keepcoding wrote:
I am wondering why the focus throw on Voigtlander lenses is linear.
I think it would make the focus experience better if they would apply a non-linear focus speed (e.g. below 1m double the focus speed). Even on the CV 50/2 I sometimes think the focus throw is on the long side when switching from infinity to close focus.
realVivek wrote:
It is the exact opposite experience here!
Could you elaborate? In close distance, it takes a while until the focus is right, but for farther subjects it is easy to set the focus timely. Also, in close range you can always move the camera a bit forward and backward to fine tune the focus.
This is correct and not the “double the focus speed” .
This is so annoying and I am being charitable keeping the lens since the IQ is superb. 2m to 5mrange is quite important for a lens like this. This is not a landscape lens or a macro lens. I think most reviews are skewed to those and that is unfortunately influencing the manufacturers.
keepcoding wrote:
I think we mean the same thing. Focus throw is rather too short from a couple meters to infinity, but way too long below that, right?
wstam wrote:
The distributor here in Singapore only managed to secure 2 units of this lens. I bought one of them
Anyone using alternative hood on this lens that's shorter? If I remember correctly, there were some discussion on alternative hood for this lens here. Too many pages to search through...
'Same here. I find that I need to step down the 50/2 APO to f/4 for great off-axis performance. (Still not as good as CV 65/2 APO wide open)
I prefer using an extension tube with the CV 50/2 APO.'
Fred Miranda wrote:
Same here. I find that I need to step down the 50/2 APO to f/4 for great off-axis performance. (Still not as good as CV 65/2 APO wide open)
I prefer using an extension tube with the CV 50/2 APO.
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keepcoding wrote:
That is true, but the question is how important is edge sharpness for macro...
The extension tube image is slightly softer and reduces the aperture by a full f-stop, but shows less CA towards the edges.
The achromat also introduces some field curvature, making it almost impossible to get a flat surface entirely into focus.
What size of the Marumi are you using?
Unsurprisingly, using a bigger size than necessary improves the off-center performance. I'm using a 77mm +3 Marumi DHG on my 58mm threaded CV 50/1.2 and find the edges accepteable.
Another thing that I'd like to see is a direct comparison between the CV 50/2 with the Marumi and an extension tube.
Because on the CV 50/1.2 results with the achromat are clearly superior to the ones with 10mm of extension.
How would you rate the performance compared to the Zeiss Batis 40/2?
What size of the Marumi are you using?
Unsurprisingly, using a bigger size than necessary improves the off-center performance. I'm using a 77mm +3 Marumi DHG on my 58mm threaded CV 50/1.2 and find the edges accepteable.
Another thing that I'd like to see is a direct comparison between the CV 50/2 with the Marumi and an extension tube.
Because on the CV 50/1.2 results with the achromat are clearly superior to the ones with 10mm of extension.
How would you rate the performance compared to the Zeiss Batis 40/2?
Of course I've seen this one!
Yes, what I meant was full-sized images. With these crops it's always hard to say how good they really are.
My question wasn't exclusively directed at you but also Fred.
How well do you think it holds up under these conditions?
Do you think it's misleading to label the lens that took this shot as APO?
** Edit **
It was actually a trick question. The image above was shot on the new 47MP Leica SL2 with the $8,795 Leica APO-Summicron-M 50mm f/2.
I just wanted to illustrate how overblown the prior discussions were regarding the Voigtlander's CA performance. That not even the best from Leica is without some flaws at this focal length..
I could definitely do that with the FE 50/1.8 too lol.
I just found the pic below and I'm intrigued by the annular bokeh balls in the oof foliage, what do you guys think of it? Look in the trees and the bush in the right? Anything to do with the weird aperture shape at f3.2?
You may also want to check the whole group where the photo above belongs, there are some other nice pics illustrating "veiling flare", "sunstars", "purple fringing", "transition zone" and other popular topics here.
Jan 25, 2020 at 07:57 PM
Steve Spencer Offline • • • • • • • Upload & Sell: On
Yep, quite a bit of CA in those shots; more than I would be happy with. Does that suggest the APO label is misleading? Not at all as we covered earlier in this thread the APO label is not about the absence of CA, it is about the number of wavelengths that focus exactly on the focus plane. Simply put your CA test is not testing what the APO label is about.
It was actually a trick question. The image above was shot on the new 47MP Leica SL2 with the $8,795 Leica APO-Summicron-M 50mm f/2.
I just wanted to illustrate how overblown the prior discussions were regarding the Voigtlander's CA performance. That not even the best from Leica is without some flaws at this focal length.
