Nikon 60mmF2.8G lens

Joined
Jun 14, 2008
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(Mike) Michael Skerritt.
I was taking some macro shots of a flower yesterday and found that I couldn't get above F3.2? I was using my D3 in manual mode lens in manual. I just cant finger out what the hell is gowning??
If you have any suggestion's as to what could be the problem please enlighten me.:actions1:
Cheers.
Mike
 
Joined
Feb 28, 2011
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Aberdeen, WA USA
With many macro lenses the "effective" maximum aperture will be less the closer you
focus to your subject...

Thanks to a true IF design, the physical length of the lens remains constant at all focus
settings. However, the effective aperture decreases down to F/4.8 at minimum focus
distance, the lens reports this corrected value to the camera.

Source and rest of the review here:
http://www.photozone.de/nikon--nikkor-aps-c-lens-tests/394-nikkor_60_28
 
Joined
Jun 14, 2008
Messages
5,336
Location
Ireland
Real Name
(Mike) Michael Skerritt.
With many macro lenses the "effective" maximum aperture will be less the closer you
focus to your subject...



Source and rest of the review here:
http://www.photozone.de/nikon--nikkor-aps-c-lens-tests/394-nikkor_60_28

I thank you for that information.I taught that it should stay at 2.8?
I was app 20 in from the flower.Good light? Still 3.2?:m66:

However, the effective aperture decreases down to F/4.8 at minimum focus distance, the lens reports this corrected value to the camera.
Kindest Regards.
Mike.
 
Joined
Nov 6, 2008
Messages
2,447
Location
South Orange, NJ
I thank you for that information.I taught that it should stay at 2.8?
I was app 20 in from the flower.Good light? Still 3.2?:m66:

However, the effective aperture decreases down to F/4.8 at minimum focus distance, the lens reports this corrected value to the camera.
Kindest Regards.
Mike.

Correct, the closer to MFD you are for macro lenses, the larger the change in aperture.
 
Joined
Jun 14, 2008
Messages
5,336
Location
Ireland
Real Name
(Mike) Michael Skerritt.
It's nice to have friends that can answer these frustrating questions.
You learn sum ting new every day.
Cheers.
Mike
 
Joined
Dec 29, 2008
Messages
741
Location
Southern ON.CA
I was told (not sure if correct) that on a Micro lens the max aperure is only achievable at infinity. Anyone care to comment?
Please;)
 
Joined
Jul 9, 2008
Messages
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Location
City of Angels
I was told (not sure if correct) that on a Micro lens the max aperure is only achievable at infinity. Anyone care to comment?
Please;)

incorrect, you dont have to be at infinity to have max aperture. but the aperture does stop down closer than you'd expect.
 
Joined
Feb 3, 2008
Messages
195
Location
Gurgaon, India
Just a few days back I bought a new 105 f/2.8D

While testing the lens in A priority I set it for 2.8 and focussed on something real close. The aperture reading inside the viewfinder showed 3.3. I thought I had committed a mistake and tried rotating the front dial on my D300. The reading wouldn't go down to 2.8.

I assumed something was wrong with the lens. There was a brand new 105 f/2.8G VR AF-S. I tested with that and the result was the same. Finally picked up the lens manual and there it was mentioned this anomaly. Phew...!
 
Last edited by a moderator:
Joined
Jun 14, 2008
Messages
5,336
Location
Ireland
Real Name
(Mike) Michael Skerritt.
Just a few days back I bought a new 105 f/2.8D

While testing the lens in A priority I set it for 2.8 and focussed on something real close. The aperture reading inside the viewfinder showed 3.3. I thought I had committed a mistake and tried rotating the front dial on my D300. The reading wouldn't go down to 2.8.

I assumed something was wrong with the lens. There was a brand new 105 f/2.8G VR AF-S. I tested with that and the result was the same. Finally picked up the lens manual and there it was mentioned this anomaly. Phew...!

Hi Gurudutt.Thanks for your feed back.You know what thy say,When all els fails READ THE INSTRUCTIONS!
Cheers.
Mike.
 
Last edited by a moderator:
Joined
Feb 12, 2006
Messages
1,193
Location
England
I was told (not sure if correct) that on a Micro lens the max aperure is only achievable at infinity. Anyone care to comment?
Please;)

You need to distinguish between physical aperture (the size of the opening defined by the aperture blades) and the effective aperture. With non G lenses you can set the physical aperture using the ring on the lens. The camera though will report the effective aperture. These are not the same close up. This is because as you get very close, the image is blown up lots, and becomes dim. So you need a longer exposure even though the physical aperture is unchanged. For a good quality internal fodussing macro lens such as the 60mm F2.8 G, the effective aperture is only about 1 stop different from the real one at 1:1. but for older non internal focussing lenses there can be 2 or 3 stops of light loss. I won't bore you with an explanation of why.
 

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