Eisenberg's which is near my internist is not a deli, but an old fashioned lunchionette famous (so they claim) for their tuna fish salad sandwich. I tried it and was dissapointed. They don't have pastrami on a steam table, but heat it in a microwave (I believe). If we want to visit MOMA, the Carnegie Deli is not too far away. They are expensive, crowded with tourists, but are said to have the best pastrami in the city. I have not tried it, however.
As for camera stores there are surprisingly few compared to 20 years ago. B&H are not too far away, Photo Village and Tamarkin's are fairly close together and Adorama is several blocks to the west.
One can buy an all day transit card for about six or seven dollars and ride busses and subways all day so long as the trips are 18 minutes or more apart. Manhattan has pretty good bus service.
Please keep making suggestions.
Kurt M.