Home · Register · Software · Software · Join Upload & Sell

Moderated by: Fred Miranda
Username   Password

  New fredmiranda.com Mobile Site
  New Feature: SMS Notification alert
  New Feature: Buy & Sell Watchlist
  

FM Forums | Alternative Gear & Lenses | Join Upload & Sell

1       2       3              9      
10
       11       end
  

Archive 2010 · Moon By Lens (100% crops)
  
 
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #1 · p.10 #1 · Moon By Lens (100% crops)


Ah... no worries...



...


Nice one nalahm!




Feb 16, 2011 at 03:53 PM
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #2 · p.10 #2 · Moon By Lens (100% crops)


That's still very good but whoa, the 18MP and the APS-C crop factor really makes that huge! Bigger that I thought anyway... About three times bigger. :o




Feb 17, 2011 at 12:07 AM
bakka303
Offline
• •
Upload & Sell: Off
p.10 #3 · p.10 #3 · Moon By Lens (100% crops)


denoir wrote:
I agree that shots (crops) of the moon tell a lot about the quality of the lens.

The Zeiss 100 MP is for instance a very sharp lens:

Full image:
http://peltarion.eu/img/moon.jpg

100% crop:
http://peltarion.eu/img/moon2.jpg



Ok, sorry, I'll go away now


THIS>Just made me spit tea over my keyboard.



Feb 17, 2011 at 12:19 AM
sirimiri
Offline
• • • •
Upload & Sell: Off
p.10 #4 · p.10 #4 · Moon By Lens (100% crops)


meehzhzh...Pentax 645 600mm meamssfdmsdmf Canon 1.4 teleconverter....lmwaerlkamse....some of added contrast in DPP to bring it back to life, some USM...

Cropped to square mwemrwlekr.....

EOS 5DII, uh..
Shooting Mode Manual Exposure
Tv( Shutter Speed ) 1/60
Av( Aperture Value ) 0.0 (f/11 I think?)
ISO Speed 100
Image Size 5616x3744

http://img638.imageshack.us/img638/3995/webzorz.jpg

Edited on Feb 17, 2011 at 07:46 AM · View previous versions



Feb 17, 2011 at 07:28 AM
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #5 · p.10 #5 · Moon By Lens (100% crops)


That's impressive if 100%...

Is it?



Feb 17, 2011 at 07:32 AM
sirimiri
Offline
• • • •
Upload & Sell: Off
p.10 #6 · p.10 #6 · Moon By Lens (100% crops)


http://img202.imageshack.us/img202/6488/100percent.jpg

That's pretty much 1:1, I think....100%. I think I leaned too heavily on the USM, to get some better definition. Our air in LA is polluted, don't you know!

(sorry if I am screwing over the thread here, Bifurcator, with my rambling ways!)



Feb 17, 2011 at 07:42 AM
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #7 · p.10 #7 · Moon By Lens (100% crops)


naw, it's all good bro! And that's still pretty exceptional for 100%! One of the best in the thread so far! Nice!




Feb 17, 2011 at 07:47 AM
mMontag
Offline
• • • •
Upload & Sell: Off
p.10 #8 · p.10 #8 · Moon By Lens (100% crops)


Nice work everyone - so glad to see some of that great old glass getting used.

R.H. - great use of the FD's - I've considered investing in some of the FD longs many times - one of these days.



Feb 17, 2011 at 07:42 PM
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #9 · p.10 #9 · Moon By Lens (100% crops)


RH, I would love to see a 100% crop of that and see a pic of what your lens looks like.





sirimiri, yeah that last one looks like it's the 100%. Here's my processed image of the RAW you sent me:

http://tesselator.gpmod.com/Images/_Astronomy/Dantes_View645Pentax600-1_4xTC_14.jpg

Hope the beers were nice!

BTW, is this the lens you used?

http://img265.imageshack.us/img265/6950/pentax645n12140710mbpr4.jpg

What a cool looking lens! Looks like it's sharp for birding too: http://forums.steves-digicams.com/pentax-lenses/133802-645-pentax-lens-viable-option.html



Feb 18, 2011 at 03:47 AM
R.H. Johnson
Offline
• • • •
Upload & Sell: Off
p.10 #10 · p.10 #10 · Moon By Lens (100% crops)


i have never understood what is meant by 100% crop.


Feb 18, 2011 at 05:35 AM
 

Search in Used Dept. 



Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #11 · p.10 #11 · Moon By Lens (100% crops)


If you do not scale it and you crop it then it's a "100% crop". It's a way viewing some part of the image at "actual size" - 1:1 pixel ratio.


Feb 18, 2011 at 05:44 AM
sirimiri
Offline
• • • •
Upload & Sell: Off
p.10 #12 · p.10 #12 · Moon By Lens (100% crops)


Bifurcator wrote:
BTW, is this the lens you used?
http://img265.imageshack.us/img265/6950/pentax645n12140710mbpr4.jpg
What a cool looking lens! Looks like it's sharp for birding too:

That's the lens. The carrying handle is a cool idea but adds lots of weight and frankly, bulks it up when you place it in a backpack.

In that image above, the 128mm (!) OEM protective Pentax filter is missing. The manual states: "...the filter is designed for part of the optical system, it is advisable to keep it on all the time."

Another great feature is the rotating portion of the lens tube. You don't rotate the barrel through the collar, you only twist the rear tube/camera through 360 degrees.



Feb 19, 2011 at 10:32 PM
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #13 · p.10 #13 · Moon By Lens (100% crops)


Yeah, several lenses I have have a rear filter and all of them say that "it's part of the optical formula" but in my tests it does nothing other than add internal reflections. In both the FD 300/2.8L and the FD 300/4L for example I can see it plainly. If I set my camera to spot metering and then point it just off the edge of the full Moon the EVF amplifies the image (tryig to compensate for the blackness of space) and the internal reflections of the Moon surface show up very brightly. Slide out the rear filter and the reflection disappears leaving only clean black space and a white Moon. And all my resolution tests show that there's no detectable difference with or without it. Maybe it would matter for AF or something?

So IMO if you're shooting bright or high-contrast objects you're better off without it and otherwise it just doesn't matter either way.




Feb 19, 2011 at 10:58 PM
sirimiri
Offline
• • • •
Upload & Sell: Off
p.10 #14 · p.10 #14 · Moon By Lens (100% crops)


Perhaps it's a soft element behind it? Soft, as in coating or glass type or otherwise? I don't know, I don't have a block diagram that says anything.

"merely conjecture"



Feb 19, 2011 at 11:05 PM
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #15 · p.10 #15 · Moon By Lens (100% crops)


There's some more discussion about this with Ed Sawyer (who I do trust to know what he's talking about) starting here: http://www.fredmiranda.com/forum/topic/954103/1#9209081 although concerning a 18mm UWA lens.




Feb 19, 2011 at 11:09 PM
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #16 · p.10 #16 · Moon By Lens (100% crops)



The Moon:


400mm, f/5.6, 1/20s, ISO 100


The Lens:


Tamron 200-400mm AF, IF, LD, f/5.6


That's through clouds in the day-time BTW... I'm waiting for a clear night to get a good shot with this tamron. I'm thinking it'll be pretty great cuz the lens is actually quite sharp for terrestrial imaging.



Jul 05, 2011 at 04:44 AM
Bifurcator
Offline
• • • • •
Upload & Sell: On
p.10 #17 · p.10 #17 · Moon By Lens (100% crops)


Here's a little better shot with this lens. It was still still hazy and the sky was dawn-ish but both less so than the previous image. With crystal skys this lens should be even better than this...

The Moon:


400mm, f/5.6, 1/20s, ISO 100


The Lens (again):


Tamron 200-400mm AF, IF, LD, f/5.6



Man, atmospheric conditions sure make a massive difference... :P





Jul 05, 2011 at 11:02 PM
tc95
Offline
• • •
Upload & Sell: On
p.10 #18 · p.10 #18 · Moon By Lens (100% crops)


OK...here are my shots...

SD14 + Nikkor 800 5.6...





SD-14 + Nikkor 800 5.6 + Tamron 1.4 TC


The Set-up...





Great stuff everyone...!!!



Jul 06, 2011 at 04:39 AM
mpmendenhall
Offline
• • • •
Upload & Sell: Off
p.10 #19 · p.10 #19 · Moon By Lens (100% crops)


Leica APO-Telyt 280/4 + Canon 2x II + Canon 1.4x II = 780mm/f11 (5D, 100% crop)
http://praetoriusphoto.images.s3.amazonaws.com/fmforums/20110715_moon_784.jpg
And, comparison between Canon 1.4x II and Leica APO-Extender-R 1.4x
100% crop, upper right corner, Canon 1.4x II first:
http://praetoriusphoto.images.s3.amazonaws.com/fmforums/20110715_moon_400_c.jpg
Leica APO 1.4x, upper right corner:
http://praetoriusphoto.images.s3.amazonaws.com/fmforums/20110715_moon_400_l.jpg
not perfectly APO in the far corners, but a lot sharper/more detailed than the Canon (the slight CA cleans up very easily with adjustment), and slightly more magnification



Jul 16, 2011 at 05:34 AM
1       2       3              9      
10
       11       end






FM Forums | Alternative Gear & Lenses | Join Upload & Sell

1       2       3              9      
10
       11       end
    
 

You are not logged in. Login or Register

Username   Password    Reset password