Greggf wrote:
^^^^Great portraits! I too love this lens! For pseudo macros, I change the settings to 18m 1.5 crop and magnification jumps as well. I'll have to try the 26mm tube....hmmmmm
Here is a quick portrait from Kauai last month of Gio while we were at Duke's
Gregg
@f1.4@
Lovely background rendering Greg!
Regarding crop mode and magnification. I believe cropping the image won't increase magnification, it only changes field of view.
Fred Miranda wrote:
Very nice!
Another 50/1.4 ZA benefit against other 50mm lenses is the high magnification. With 26mm extension tubes, it approaches 1:1 macro (~0.70x).
This macro magnification coupled with almost no LoCA is a very nice combination.
I searched my collection of images taken with this lens after reading your comment, Fred. During the evaluation process of this lens, I did take a few close up images at wide open and at a fairly close focusing distance. Here are two of them. The first one is a slight crop more for composition and the second one is cropped more. I really like the rendition of this lens but I haven't used it often enough due to its size and weight.
AGeoJO wrote:
I searched my collection of images taken with this lens after reading your comment, Fred. During the evaluation process of this lens, I did take a few close up images at wide open and at a fairly close focusing distance. Here are two of them. The first one is a slight crop more for composition and the second one is cropped more. I really like the rendition of this lens but I haven't used it often enough due to its size and weight.
Beautiful Joshua! it's very sharp even at MFD. The second image could benefit from turning EFCS "off".
I use the Kenkos extension tubes with it. They nicely built with metal mount to support this heavy lens:
Haha, good eye, Fred! I didn't even think of that when I did it. But you are right, I need to pay more attention to that issue, for sure. It would be no longer an issue in a full time electronic shutter, would it, like with the A9 or A9r ?
AGeoJO wrote:
Haha, good eye, Fred! I didn't even think of that when I did it. But you are right, I need to pay more attention to that issue, for sure. It would be no longer an issue in a full time electronic shutter, would it, like with the A9 or A9r ?
No, this is not an issue with the A9 but you could also use the electronic shutter (silent mode) with the A7RII and static subjects. Like that you never need to worry about it.
Fred Miranda wrote:
Lovely background rendering Greg!
Regarding crop mode and magnification. I believe cropping the image won't increase magnification, it only changes field of view.
Yeah, changing the sensor size doesn't change the subject to sensor ratio, but it's not all downside when you've got 42MP with which to play. You can shoot at wider apertures with the same apparent depth of focus than if you focused closer and normalized the FoV over the entire sensor. The extra distance can make it easier to light your subject or approach your subject. If your application requires maximum resolution, then there's no substitute for a closer focusing lens, but if you don't, framing to crop may be the better way to get what you're after.
I have done several searches, but cannot come up with the post in which Fred explains how to check for decentering. Can someone post a link?
Thanks
Joe
Don't want to start a fight but let's say you have a spectacular photo, an image that just blows everyone away. Is anybody asking for decentering issues? Just asking...
Serious, if I take a strong flashlight and look into my expensive GM-Glass I will find dust for sure. Will it effect my pictures, most likely not, but it will take away my sleep. Therefore I just look for obvious problems that appear right away. Forensic Science I let other's do
It's pretty simple. Take any lens look for a good left corner let's say take 1st shot with it up in left corner than rotate camera from right corner to left than bottom right to left up corner than rotate bottom left to upper left. Basically your shorting same corner on all four corners of frame. Compare them if all equal you should be centered. Best to use tripod if you can for critical analysis but I've down it handheld.
Myself I use a wall like Big Bronco and I can tell easily if I'm symmetrical on all corners. If one side is out than you know your not centered
vario1 wrote:
I have done several searches, but cannot come up with the post in which Fred explains how to check for decentering. Can someone post a link?
Thanks
Joe
Well in a lot of cases it won't matter if a upper corner maybe out because of blue sky in the frame. The bigger issue is getting WTF you paid for and having resale value too. But in shooting sometimes these corners really matter for client or personal needs. You can blow it off but some of us shoot for critical quality throughout the frame. You certainly have the right to buy a lens ignore any issue and be happy as a clam. I for one won't keep a bad lens. I went through 5 FE 35 1.4. Am I anal yes I sure as hell am but I can sell this lens to a member and let them know I'm selling them something good not some problem. That means more to me than maybe most folks. I actually give a shit. This is a 1500 dollar lens that's worth the effort to get a good copy at least for me. I have 6 perfect lenses and I go shoot for money and can feel comfortable with my gear to charge the day rates I charge. I'm not cheap either
Mirror wrote:
Don't want to start a fight but let's say you have a spectacular photo, an image that just blows everyone away. Is anybody asking for decentering issues? Just asking...
Serious, if I take a strong flashlight and look into my expensive GM-Glass I will find dust for sure. Will it effect my pictures, most likely not, but it will take away my sleep. Therefore I just look for obvious problems that appear right away. Forensic Science I let other's do
A decentered or tilted lens will suffer resolution loss throughout the entire frame (some areas more than others), so it's not only a corner issue. It also affects aberration control.
If that's not important really depends on your needs.
Fred Miranda wrote:
A decentered or tilted lens will suffer resolution loss throughout the entire frame (some areas more than others), so it's not only a corner issue. It also affects aberration control.
If that's not important really depends on your needs.
Fully correct, I just wonder if we could afford these lenses if the QC would let go only 100% centered copies
Nobody could. Under such premise no manufacturer would release any lens ever, because the prices would skyrocket by a factor of 10x ( almost to Leica's level. )
Let's be realistic. There aren't any 100% perfectly centered lenses out there. Some people might be fine with a 90% of perfection, while others won't keep anything below 98%, so the manufacturers try to find the best relationship between QC and pricing in order to content the maximum percentage of customers and get the highest profit.
We all know that, as sensor resolution increases, lenses that seemed flawless years ago now show their inherent limitations. Even Guy's 6 perfect copies would exhibit some kind of decentering in a A9R-MkIII 150 Mpix camera.
I to try to get to at least 95 percent perfect and that ain't easy at all. Best lens really Is the FE 50 1.4 that I've come across. It's hits just about every check mark just wish I liked 50mm more than I do. Really that maybe me being very anal about it. If you polled your last 800 shots my bet 500 of them the corners would mean nothing anyway. Where I get nervous is the quick fall off in the mid range and if your shooting small groups and such those on the outside could go soft easily. So you really have to watch field curvature lenses.
artur5 wrote:
Nobody could. Under such premise no manufacturer would release any lens ever, because the prices would skyrocket by a factor of 10x ( almost to Leica's level. )
Let's be realistic. There aren't any 100% perfectly centered lenses out there. Some people might be fine with a 90% of perfection, while others won't keep anything below 98%, so the manufacturers try to find the best relationship between QC and pricing in order to content the maximum percentage of customers and get the highest profit.
We all know that, as sensor resolution increases, lenses that seemed flawless years ago now show their inherent limitations. Even Guy's 6 perfect copies would exhibit some kind of decentering in a A9R-MkIII 150 Mpix camera. ...Show more →
GMPhotography wrote:
I to try to get to at least 95 percent perfect and that ain't easy at all. Best lens really Is the FE 50 1.4 that I've come across. It's hits just about every check mark just wish I liked 50mm more than I do. Really that maybe me being very anal about it. If you polled your last 800 shots my bet 500 of them the corners would mean nothing anyway. Where I get nervous is the quick fall off in the mid range and if your shooting small groups and such those on the outside could go soft easily. So you really have to watch field curvature lenses. ...Show more →
Well said, Guy. There is more about it than just corner peeping even if the sharp spot is still laser sharp as it is in case of my decentered 1.4/50ZA.
GMPhotography wrote:
I to try to get to at least 95 percent perfect and that ain't easy at all. Best lens really Is the FE 50 1.4 that I've come across. It's hits just about every check mark just wish I liked 50mm more than I do. Really that maybe me being very anal about it. If you polled your last 800 shots my bet 500 of them the corners would mean nothing anyway. Where I get nervous is the quick fall off in the mid range and if your shooting small groups and such those on the outside could go soft easily. So you really have to watch field curvature lenses.
A while back I sold you a perfect 50/1.4 ZA and you didn't keep it!!!
Currently I have great copies of the 50/1.4 ZA and 55/1.8 ZA. I've learned the 55/1.8 works great on the A6500 together with Sony's 24/1.8. (35/85 equiv. tiny lenses on a small body)
I know and I'm wish I really liked the 50mm focal length as I Have tried several times but it just don't fit me.
Fred Miranda wrote:
A while back I sold you a perfect 50/1.4 ZA and you didn't keep it!!!
Currently I have great copies of the 50/1.4 ZA and 55/1.8 ZA. I've learned the 55/1.8 works great on the A6500 together with Sony's 24/1.8. (35/85 equiv. tiny lenses on a small body)
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