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Archive 2010Mamiya(MF) on Digital Thread
p.12 #1Mamiya(MF) on Digital Thread
I haven't seen any shots here with strong OOF highlights, but many WO shots with great bokeh. The 120/4 has 9 aperture blades, right? Would anyone mind posting a picture of how the aperture looks at something like f/8 or f/11? Is it nicely rounded? I thought I read some copies suffer from an irregularly shaped aperture (also seen on the CV125/2.5).
I'm very much tempted to pull the trigger on one of these babies, but I want to make sure that this lens really has a rounded aperture because this ruined some of my shots made with my current alts. I _hate_ polygonal OOF highlights and although I like using alts, I could do without the chimping (esp. when stopping down). I was thinking about trying a new Tamron 90/2.8 because it has a good rep for sharpness and bokeh, but I have a feeling this Mamiya might beat it in terms of IQ and I'm willing to sacrifice a bit of convenience for that (but not the rounded aperture).
I'm very much tempted to pull the trigger on one of these babies, but I want to make sure that this lens really has a rounded aperture because this ruined some of my shots made with my current alts. I _hate_ polygonal OOF highlights and although I like using alts, I could do without the chimping (esp. when stopping down). I was thinking about trying a new Tamron 90/2.8 because it has a good rep for sharpness and bokeh, but I have a feeling this Mamiya might beat it in terms of IQ and I'm willing to sacrifice a bit of convenience for that (but not the rounded aperture).
May 15, 2010 at 04:31 PM
p.12 #2Mamiya(MF) on Digital Thread
Mamiya 110 @2.8 on 5D 430 EX flash bounced off the ceiling
-Jim
http://farm2.static.flickr.com/1411/4609904039_30ba0e6f99_b.jpg
-Jim
http://farm2.static.flickr.com/1411/4609904039_30ba0e6f99_b.jpg
May 15, 2010 at 07:26 PM
p.12 #3Mamiya(MF) on Digital Thread
Can somebody let me know the crop factor for these 645 lenses on FF. (5d MII)
Thanks
Hans
Thanks
Hans
May 16, 2010 at 04:01 AM
p.12 #4Mamiya(MF) on Digital Thread
They do not have any.
Happy shooting,
Yakim.
Happy shooting,
Yakim.
May 16, 2010 at 04:06 AM
p.12 #5Mamiya(MF) on Digital Thread
How is that Yakim. It is different Film size 
May 16, 2010 at 04:13 AM
p.12 #6Mamiya(MF) on Digital Thread
Jesus... yes,Jim 
How can I ask such a silly question
Thanks, Hans
How can I ask such a silly questionThanks, Hans
May 16, 2010 at 04:39 AM
p.12 #8Mamiya(MF) on Digital Thread
jcolwell wrote:
Here's my Mamiya M645 A 120/4 Macro at f/8 and f/16. These photos are taken through the rear element, and so it's an "outtie"
Wonderful rounded blades
Thanks for posting, Jim.
Hans
Here's my Mamiya M645 A 120/4 Macro at f/8 and f/16. These photos are taken through the rear element, and so it's an "outtie"
Wonderful rounded blades
Thanks for posting, Jim.Hans
May 16, 2010 at 04:57 AM
p.12 #9Mamiya(MF) on Digital Thread
Jim Schemel wrote:
7D and Mamiya 120f4 @f4
-Jim
http://farm2.static.flickr.com/1036/4602613960_8eaefc3094_b.jpg
Jim:
Just curious...what caused the angled vertical streaks on the left side of the image? I noticed one between the left edge of the frame and the horse's right ear (viewer left), and two others between the left edge of the frame and the horse's bridle (?).
7D and Mamiya 120f4 @f4
-Jim
http://farm2.static.flickr.com/1036/4602613960_8eaefc3094_b.jpg
Jim:
Just curious...what caused the angled vertical streaks on the left side of the image? I noticed one between the left edge of the frame and the horse's right ear (viewer left), and two others between the left edge of the frame and the horse's bridle (?).
May 16, 2010 at 09:08 AM
p.12 #10Mamiya(MF) on Digital Thread
I figure it's rain drops. Knowing the terminal velocity of the average rain drop, you could calculate Jim's shutter speed. Since I don't know this, I'll ask:
Jim, what shutter speed did you use?
P.S. Google is my friend. For an average 9m/s rain drop velocity, and streak length of 6 cm, I figure the shutter speed was either t = 1/160 sec or 1/125 sec (probably the slower).
Edited on May 16, 2010 at 09:57 AM · View previous versions
Jim, what shutter speed did you use?
P.S. Google is my friend. For an average 9m/s rain drop velocity, and streak length of 6 cm, I figure the shutter speed was either t = 1/160 sec or 1/125 sec (probably the slower).
Edited on May 16, 2010 at 09:57 AM · View previous versions
May 16, 2010 at 09:51 AM
p.12 #11Mamiya(MF) on Digital Thread
You're probably correct...I initially considered that, but figured there would be more than three streaks.
May 16, 2010 at 09:56 AM
p.12 #12Mamiya(MF) on Digital Thread
jcolwell wrote:
Here's my Mamiya M645 A 120/4 Macro at f/8 and f/16. These photos are taken through the rear element, and so it's an "outtie".
Thanks for that. Funny how the second shot shows the lights from the ceiling, but it looks like they are tiny lights mounted inside your lens.
I wonder if the blades of the Tamron 90 or Sigma 150 are any rounder (I'd hope so).
Here's my Mamiya M645 A 120/4 Macro at f/8 and f/16. These photos are taken through the rear element, and so it's an "outtie".
Thanks for that. Funny how the second shot shows the lights from the ceiling, but it looks like they are tiny lights mounted inside your lens.
I wonder if the blades of the Tamron 90 or Sigma 150 are any rounder (I'd hope so).
May 16, 2010 at 10:32 AM
p.12 #13Mamiya(MF) on Digital Thread
jcolwell wrote:
I figure it's rain drops. Knowing the terminal velocity of the average rain drop, you could calculate Jim's shutter speed. Since I don't know this, I'll ask:
Jim, what shutter speed did you use?
P.S. Google is my friend. For an average 9m/s rain drop velocity, and streak length of 6 cm, I figure the shutter speed was either t = 1/160 sec or 1/125 sec (probably the slower).
Yes it was raining.And Jim you are scarring me with your math.Shutter speed was 1/100sec
I figure it's rain drops. Knowing the terminal velocity of the average rain drop, you could calculate Jim's shutter speed. Since I don't know this, I'll ask:
Jim, what shutter speed did you use?
P.S. Google is my friend. For an average 9m/s rain drop velocity, and streak length of 6 cm, I figure the shutter speed was either t = 1/160 sec or 1/125 sec (probably the slower).
Yes it was raining.And Jim you are scarring me with your math.Shutter speed was 1/100sec
May 16, 2010 at 06:09 PM
p.12 #14Mamiya(MF) on Digital Thread
Jim, I bow with awe. Again. 
Happy shooting,
Yakim.
Happy shooting,
Yakim.
May 17, 2010 at 02:18 AM
p.12 #15Mamiya(MF) on Digital Thread
5D and Mamiya 120f4 cross processed in DPP
-Jim
http://farm4.static.flickr.com/3406/4616743180_237c8790ba_b.jpg
-Jim
http://farm4.static.flickr.com/3406/4616743180_237c8790ba_b.jpg
May 17, 2010 at 03:03 PM
p.12 #16Mamiya(MF) on Digital Thread
Mamiya 80mm @1.9 on 5D
-JIm
http://farm4.static.flickr.com/3400/4617213350_81e41bfde2_b.jpg
-JIm
http://farm4.static.flickr.com/3400/4617213350_81e41bfde2_b.jpg
May 18, 2010 at 03:01 PM
p.12 #17Mamiya(MF) on Digital Thread
All pics from Mamiya 645 35mm non "N" version.
http://img261.imageshack.us/img261/3470/img2261f.jpg
http://img686.imageshack.us/img686/5498/img2268i.jpg
http://img200.imageshack.us/img200/3889/img2278k.jpg
http://img200.imageshack.us/img200/3574/img2275n.jpg
http://img185.imageshack.us/img185/3879/img2280i.jpg
http://img291.imageshack.us/img291/5430/img2284d.jpg
http://img261.imageshack.us/img261/3470/img2261f.jpg
http://img686.imageshack.us/img686/5498/img2268i.jpg
http://img200.imageshack.us/img200/3889/img2278k.jpg
http://img200.imageshack.us/img200/3574/img2275n.jpg
http://img185.imageshack.us/img185/3879/img2280i.jpg
http://img291.imageshack.us/img291/5430/img2284d.jpg
May 19, 2010 at 06:37 AM
p.12 #18Mamiya(MF) on Digital Thread
Very nice Pengland - any idea what aperture range?
May 19, 2010 at 11:42 AM
p.12 #19Mamiya(MF) on Digital Thread
Thanks.....taken this morning @ f5.6 - f8.
Nick
Nick
May 19, 2010 at 12:05 PM
p.12 #20Mamiya(MF) on Digital Thread
Nick,
are some of these cropped? If not what is the MFD?
-Jim
Edited on May 19, 2010 at 04:08 PM · View previous versions
are some of these cropped? If not what is the MFD?
-Jim
Edited on May 19, 2010 at 04:08 PM · View previous versions
May 19, 2010 at 01:33 PM