Originally posted by: troytime
Originally posted by: 996GT2
Originally posted by: ElFenix
Originally posted by: 996GT2
How do you stop down EOS lenses when mounted on that thing?
you don't.
for canon you put the lens in manual or aperture mode, select the aperture you want, press and hold the dof preview button, and dismount the lens while holding the button. the aperture blades stay stopped down. you have to do that using an electrical connection, so you can't do it while this bellows is mounted.
obviously it's easier to deal with if you've got an old film body laying around to use for changing aperture, or if you use a nikon or pentax lens with adapter.
Ah, that's what I thought, since EOS lenses don't have aperture rings.
I was considering just shelling out about $200 for a used Sigma 50mm 1:1 f/2.8 Macro instead of dealing with extension tubes, since I found those quite awkward to use back when I had a D200.
50mm seems too wide for macro..unless you just shoot flowers and things that don't move
There are a number of advantages and disadvantages to different focal lengths for macro:
You have to get closer to your subject to get 1:1 magnification if you're using a shorter focal length lens.
Shorter focal lengths like 50mm + extension tubes:
- compact, lightweight, and convenient enough to have on you at all times
- when not doing macro, you can just take off the extension tubes and you've got a regular lens
- allows you to get closer to your subject, which has a number of advantages including being able to use your body to block the wind from blowing your subject around and being close enough to reach out and use your hand or some other contraption to hold your subject steady.
- having to get closer also means a higher probability of having your subject run or fly away, which is sometimes not too bad with oblivious insects but can be a real pain for more aware animals like small lizards
- easier to hold steady and hit that thin sliver of focus while hand holding because the lens is smaller and lighter.
- less demanding on tripods and tripod balls due to less weight
- difficult to hit your subject with traditional flash because it is so close to the lens, can be worked around by having an off camera flash, remote flash, ring light, or some other macro flash setup.
Longer focal lengths:
- you can stay further from your subject, disturbing it less or being able to get a macro shot when there is some kind of a barrier putting distance between you and the subject (ie. a window)
- harder to reach out and hold your subject steady and harder to block your subject from external forces
- great magnifications have been achieved with long macros and a 50mm or 30mm reverse mounted to their fronts
- not as compact or lightweight and a bigger pain to carry around everywhere
- not as easy to hold steady and maintain a fixed distance from the subject while handholding
- a bit easier to hit your subject with flash because it's further away