F/64???

[AdamW]

I have a lens that goes down to f64: http://www.loreo.com/pages/products/loreo_lenscap.html

A total waste of money!

What an odd product!

[24Peter]

'da bomb! http://www.loreo.com/pages/products/loreo_3dcap.html
From the caption of one of the photos in the sample photo gallery: "It looks like a River, but is really a place where mosquitoes breed!"

[Rhys]

Many large format cameras - 5x7s, 10x8s etc have f64. Smaller cameras do not. The f-stop is related to the overall size of the lens elements and varies with the lens.

[Rhys]

What an odd product!

Given that a body cap costs $10 from Ritz and would take maybe 5 minutes to make a pinhole through with a hammer and a pin or fine nail, it seems a bit excessive to spend $15 plus $4 postage for what appears to be exactly the same thing. The stereo device looks interesting though. I believe Pentax makes a better model though (or at least they did in 35mm days.

[cwphoto]

Yeah Large Format as said before. When f/5.6 is wide open it brings a new meaning to 'stopping down'.

[FLiPMaRC]

'da bomb! http://www.loreo.com/pages/products/loreo_3dcap.html
From the caption of one of the photos in the sample photo gallery: "It looks like a River, but is really a place where mosquitoes breed!"

LOL! That looks like a fun gimmick item

[Rhys]

I wonder whether I could sell a generic body cap with a hole drilled for cost plus $5 plus postage - lol

[Forced Perfect]

I am not entirely sure about this, so perhaps somebody will correct me, but I think that the displayed f/stop is not the real f/stop in this case. So, while the camera may display f/57, you are still shooting at f/32.

When you focus a macro lens to 1:1, you will lose some light. Nikon cameras compensate for this loss of light by displaying an equivalent f/stop. This can be quite handy when shooting manually, as the aperture displayed is the one you can use for determining the shutter speed and flash output (there's no need to worry about the light loss compared to shooting at normal focussing distances).

My understanding is that Nikon cameras show the effective aperture (meaning magnification is accounted for) when using macro lenses and Canon cameras do not. Therefore your lens could be set to f/32 and the camera will adjust that as you approach 1:1.

As far as minimum aperture goes, my wife's Sigma EX 50mm f/2.8 Macro goes down to f/45 if I recall correctly. Not that I would ever use any lens past ~f/16 in most cases. :P

[droopy1592]

Some old school lenses can get down to f/64

[FLiPMaRC]

LOL !!! ... found this on eBay.

f/150 Pancake Lens



Horrible sample pics in the eBay page: http://cgi.ebay.com/Skink-Pinhole-Pa...QQcmdZViewItem

Given that a body cap costs $10 from Ritz and would take maybe 5 minutes to make a pinhole through with a hammer and a pin or fine nail, it seems a bit excessive to spend $15 plus $4 postage for what appears to be exactly the same thing. The stereo device looks interesting though. I believe Pentax makes a better model though (or at least they did in 35mm days.

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