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I find lighting gels work reasonably well when I need big filters. So far I've not needed any bigger than 180x180mm but bigger sizes are readily available.
They are more of a pain to mount than...

As with all great shots, it's possible to find multiple cropped versions that work well. If I had a shot like the 6x6 you're suggesting I'd want to crop some of the foregrounds out the bottom 1/4 or...

A couple of stiched shots for you:
First through my microscope (91 shots at 40x mag)
Fly Wing
70319

This one is shot in infra red, handheld with an older unmodified DSLR (Pentax K100d, 50mm...

Xylene (Xylol) will apparently dissolve the balsam usually used to cement the lenses together, so this should remove the traces of the old cement allowing you to redo it. Good luck!!!

Vinegar should shift fungus. You'll want to rinse the gg afterwards with distilled water to ensure it dries without streaks.
Sunlight (actually UV) is also reported as being effective at killing it,...

Nevermind I've managed to get a cheap set through e-bay (despite e-bay cancelling the transaction after I'd paid!!!)

£21 for both standard & extension racks means it's not worth the effort of...

Paul you're not alone in preferring mountains, I've lived on the Essex /Suffolk boarder most of my life.
Lakes & semi wilderness I can manage locally, but despite my Dutch ancestry I try to get to...

You looked and saw that only the center portion of the image got through the lens.



I would expect that's because normal construction lenses are much easier to correct for all the various...

I can't see how you can say the tubes & baffles don't seem to be responsible. The only reliable way to judge this is to remove them. The light HAS to go somewhere, it doesn't magically disappear. The...

They increase the focal length by spreading the light such that only the middle portion of that coming through the lens reaches the film. I general they will have internal baffels to prevent the...

If the adapter includes optical elements the OP is right. He also concedes that it may be impractical. There are avaliable adapters to go between lenses/cameras that include optical elements to...

Actually Leigh the question was "Is it possible?" with no reference to macro or general.

The reply is that for macro it is possible & has been done.

For general work it is TECHNICALLY possible...

Yes they're outside the lens for nearly all retrofocus & telephoto lenses. They can also change with the settings of the lens (at least with zooms) For simple or symmetrical lenses where your formula...

"Petrochemist, there are books on photomacrography. Buy several, take your mind out of 35 mm SLR land, and then reconsider your positions. "

I have several. Though I could only lay my hands on 4...

Your formulae are for simple lenses. Telephoto & retrofocus designs do not follow them.
For macro work a reversed lens will focus approximately where the normal film/sensor plane is (~45mm for most...

Indeed 'at Infinity' It won't. The OP did not specify if they were referring to distant subjects, no-one else has suggested it would work for distant subjects.

Whilst the OP MAY have been ignorant of the limitations, he hasn't posted in this thread since page 1. No one has claimed that SLR lenses will work for normal landscape/portrait photography.
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Using the same linkages the camera uses to adjust it, would work fine with my old PK lenses.

I know it's not a convenient arrangement but a single mount could be suitable for all of a Togs SLR...

There is another option for reverse mounting lenses that can be made to work on a large format camera. Combine a standard SLR lens mount on the inside of a lens board, so the lens is within the...

Whilst this is a good general assessment of the situation, I don't think the last point is quite right.
Yes, Suitable coverage will only be achieved in macro work where you have considerable...

Yes, got the standards - they seem beautifully engineered and were what attracted me to the project!
The pinion is highly recessed , with no access for calipers etc & difficult to see. It looks to...

Thanks Kumar -
Postage is more than the cost of the bits, even without the possibility of Customs duties (20% of total including postage for VAT + possibly other import duty + a hefty couriers...

I've recently got hold of most of the parts of an old D45M, which I'd like to put to use.

Unfortunately it seems the later monorails are a completely different design, and I've not seen any being...